In this appeal by the Commonwealth, we must decide whether a non-prosecution agreement entered into between Appellee and a municipal police officer binds the District Attorney of Allegheny County by its terms when Appellee performs his part of the agreement. Finding, under the specific facts of this case, that the Commonwealth is so bound, we affirm the trial court’s grant of Appellee’s petition to dismiss the charges pending against him.
The facts and procedural history are easily summarized as follows: On or about September, 1987, Lieutenant Thomas Houser, a police officer employed by the Shaler Township Police Department, told Appellee that charges relating to the alleged sexual abuse of his then two-and-one-half-year-old daughter would be dropped if he successfully passed a polygraph test. Relying on this promise, Appellee, at his own expense and without the advice of counsel, arranged to take such a test. Appellee passed this test, as well as a second test in 1988. In accordance with the agreement, no charges were initiated against Appellee at that time.
Almost four years later, two different police officers from the Shaler Township Police filed a criminal complaint accusing Appellee of sexually abusing his daughter during the period of June to August, 1987. Following a preliminary hearing, Appellee was held for trial on charges of involuntary deviate sexual intercourse, incest, indecent assault, corruption of mi*456nors, and endangering the welfare of children.1 After the district attorney elected to formally charge Appellee by information, present counsel for Appellee filed a petition to dismiss, based on the 1987 non-prosecution agreement. In the petition Appellee alleged that the entry of formal charges against him violated his constitutional rights, as well as public policy, and amounted to prosecutorial misconduct. On February 19,1992, after hearing oral argument, the trial court filed an order granting the petition. A timely motion to reconsider filed by the Commonwealth was denied and this appeal followed.
On appeal, the Commonwealth claims that it cannot be bound by the agreement between Appellee and Lieutenant Houser because neither the district attorney, nor any authorized representative or agent of the prosecutor’s office, was privy to the non-prosecution agreement. Thus, the Commonwealth argues that the agreement is without legal consequence. The Commonwealth also asserts that the unauthorized agreement is unenforceable as a matter of public policy; it argues that such unbridled discretion is beyond the scope of municipal police powers and is an unacceptable impediment to the district attorney’s traditional prerogative to evaluate criminal complaints to determine whether a charge should be brought against a suspect. Finally, the Commonwealth asserts that a less drastic remedy is available to correct the reneging on the agreement; namely, the suppression of any inculpatory statements directly or indirectly derived from Appellee’s polygraph test. The Commonwealth argues that this remedy would “protect the public interest in the fair and efficient administration of criminal justice within the jurisdiction of the District Attorney, and it would have the salutary effect of restoring [AJppellee to the status quo ante.” Commonwealth’s Brief at p. 6.
Appellee responds to these claims by stating that, although these facts present an issue of first impression in Pennsylvania, courts of other states have upheld similar non-prosecution agreements between a criminal defendant and a prosecutor or *457a police department because it is a pledge of public faith which both fundamental fairness and detrimental reliance require that the agreements bind the prosecution. The trial court agreed with Appellee, stating: “This Court finds that fundamental fairness and public confidence in government officials and their agents require that the prosecution be held to the terms of any promises which were made to obtain performance on the part of [Appellee].” Trial Court Opinion at p. 1.
Before discussing the merits, if any, of the Commonwealth’s claims, we must first remember the narrow issue presented and the pertinent standard of review. At issue is whether the trial court properly dismissed the charges brought against Appellee. “The decision to grant or deny a motion to quash is within the sound discretion of the trial judge and will be reversed on appeal only where there has been a clear abuse of discretion.” Commonwealth v. Niemetz, 282 Pa.Super. 431, 439, 422 A.2d 1369, 1373 (1980). An abuse of discretion has been defined as
not merely an error of judgment, but if in reaching a conclusion the law is overridden or misapplied, or the judgment exercised is manifestly unreasonable or the result of partiality, prejudice, bias, or ill-will as shown by the evidence or the record, discretion is abused.
Commonwealth v. Kocher, 529 Pa. 303, 306, 602 A.2d 1308, 1310 (1992), (quoting Commonwealth v. Moyer, 497 Pa. 643, 647, 444 A.2d 101, 103 (1982)). Moreover, as an appellate court, we are bound by the trial court’s findings of fact, if supported by the record. Commonwealth v. Iannaccio, 505 Pa. 414, 480 A.2d 966 (1984). With these standards in mind, we must determine whether the trial court abused its discretion in dismissing the charges brought against Appellee on the basis of the 1987 agreement not to press charges.
Our research discloses no Pennsylvania appellate decisions that are controlling, given the present factual scenario. In Commonwealth v. Ginn, 402 Pa.Super. 405, 587 A.2d 314 (1991), the Ginns were originally charged with various crimes involving an alleged loss of funds by Mrs. Ginn’s employer. Due to the complexities of the prosecutions, the parties ap*458peared before the trial court and entered into an agreement, with court approval, that a mutually acceptable accountant would audit the employer’s books to determine whether the Ginns diverted funds. The agreement further provided that if a diversion of funds was found to have occurred, the Ginns would plead guilty to the charges; if no diversion was found, the Commonwealth agreed to nol pros the charges against the Ginns.
An audit was performed in accordance with the agreement. Upon receipt of a final report finding no theft or improper use of computers, the Commonwealth sought to challenge the report by claiming an improper audit was performed and that the auditor failed to review all the necessary documents. In response, the Ginns filed a motion to dismiss the prosecution and to enforce the agreement. The trial court scheduled a hearing on the matter, but refused to hear any testimony from the Commonwealth regarding the preparation of the report because the agreement did not provide for judicial determination of the audit and the Commonwealth had a “moral obligation here to live up to the agreement.” Id. at 408, 587 A.2d at 315 (quoting N.T. 1/23/90 at pp. 29-30). Thus, in accordance with the agreement and the auditor’s findings, the trial court dismissed the charges against the Ginns -with prejudice.
On appeal to this Court, the Commonwealth sought a reversal of the trial court’s dismissal, again claiming that the audit was incomplete and improperly prepared and that the trial court erred in refusing the Commonwealth’s request to present evidence to support these claims. Declining to review the specific allegations made by the Commonwealth regarding the preparation of the report, the panel affirmed the trial court’s dismissal of the prosecutions. In support of this decision, the panel found that the Commonwealth had a duty to abide by the terms of the agreement it made with the Ginns. Because the agreement did not allow for the subsequent challenge of the auditor’s findings in court, the auditor’s final report was controlling. Recognizing that the Ginns took a risk in agreeing to plead guilty should the auditor find that funds were diverted, and the agreement would be enforced by the courts *459under that scenario, the panel likewise held that the courts must hold the Commonwealth to the terms of the agreement and thus affirmed the dismissal of the charges. The panel further stated:
We find analogous the cases in this Commonwealth where a prosecutor and a defendant enter a plea agreement. In speaking on such a situation our Supreme Court has stated that there is an affirmative duty on the part of the prosecutor to honor any and all the promises made to a defendant in exchange for the defendant’s plea. Commonwealth v. Zuber, 466 Pa. 453, 353 A.2d 441 (1976).
Our courts have demanded strict compliance with that duty in order to avoid any possible perversion of the plea bargaining system, evidencing the concern that a defendant might be coerced into a bargain or fraudulently induced to give up the very valued constitutional guarantees attendant the right to trial by jury.
Id. at 458-459, 353 A.2d at 444.
Similar concerns over the public faith placed on such a pledge have been expressed by courts which have considered the enforceability of agreements to drop a prosecution based upon the results of a polygraph test. See Annot., 36 A.L.R.3d 1280 (1971) (for a collection of cases).
Id. at 410, 587 A.2d at 316.
The cases discussed in the above-referenced annotation refer to instances where the state prosecutor enters into an agreement with the defendant that, if he passes a polygraph test, the charges filed against him would be dropped. The prosecutor then attempted to renege on the promise. In each instance, the court upheld the enforceability of the agreement. See generally, State v. Davis, 188 So.2d 24 (Fla.App.1966), cert. den., 194 So.2d 621; Butler v. State, 228 So.2d 421 (Fla.App.1969). More recent cases decided in other sister jurisdictions have also held that the prosecutor is bound by the terms of an agreement not to prosecute if the defendant passes a polygraph test. See generally, People v. Reagan, 395 Mich. 306, 235 N.W.2d 581 (1975); People v. Starks, 146 Ill.App.3d 843, 100 Ill.Dec. 307, 497 N.E.2d 187 (2d Dist.1986).
*460These cases differ from the present case in several respects; in some of the cases the non-prosecution agreement, conditioned on the passing of a polygraph test, was approved by the court, and, in all of the cases noted above, the agreement was entered into between the defendant and the prosecution rather than a municipal police officer investigating the charges as in the present case. However, because we find the principles of fairness espoused in the above cases to be equally applicable to promises made by the police conducting the investigation, we find that the Commonwealth is bound by the agreement under the facts of this case. Moreover, courts in several states have upheld promises made to defendants by police officers investigating the crime, without the participation of the prosecutors. These decisions, while not always dealing with the taking of a polygraph test as a condition of the agreement not to prosecute, hold that the agreements are binding and preclude prosecution of the defendants.
In People v. Fisher, 657 P.2d 922 (Colo.1983), the defendant was asked by police officers to permit them to videotape him while he discussed how he committed burglaries and disposed of the stolen property. The police promised the defendant that the videotape was to be used as an instruction device for police cadets and that the videotape would not be used against him in a criminal proceeding. Subsequently, the defendant was arrested and charged with burglary. The prosecution attempted to use the videotape as evidence. The court held that the police officer’s promise would be upheld because the videotape implicated the defendant’s privilege against self-incrimination and constitutional right to counsel, and because the defendant reasonably and detrimentally relied upon the officer’s promise by fully performing his part of the bargain. The court also cited principles of fundamental fairness in upholding the promise.2 See also People v. Manning, 672 *461P.2d 499, 506 (1983) (the Supreme Court of Colorado upheld a promise between the defendant and a police officer that, if she disclosed information about her missing son, she would not be prosecuted, finding that the police officer was acting with the apparent authority of the government and that “if police officers were free to make promises to actual or potential defendants, knowing that the government could, without consequence deny or disaffirm those commitments, the temptation would be great to use unauthorized promises as a device for extracting confessions”).
Federal courts have also upheld agreements between investigating authorities and a defendant, and have further held that the prosecution is bound by the agreement. In U.S. v. Carrillo, 709 F.2d 35 (9th Cir.1983), agents of the Drug Enforcement Agency offered not to prosecute the defendant for a drug offense if he cooperated with the government’s investigation of certain suspected drug traffickers. The defendant agreed and cooperated, but stated that he would not testify in court. After refusing to testify when asked to do so, the defendant was held in contempt and indicted for possession of drugs on the ground that he breached his cooperation agreement. The court found that the indictment violated the government’s promise not to prosecute the defendant as he had performed his obligations under the agreement and that an obligation to testify was not part of the agreement. The court further stated that “[u]nder settled notions of fundamental fairness the government was bound to uphold its end of the bargain.” Id., 709 F.2d at 37.
Particularly persuasive is the district court’s holding in U.S. v. Cooke, 650 F.Supp. 991 (D.Md.1987), in which an officer of the Maryland State Police and a special agent of the FBI told the defendant that she would not be prosecuted and would enjoy immunity if she gave them information regarding a bank robbery. The defendant complied but was subsequently in-*462dieted for robbery. At a hearing on defendant’s motion to dismiss the indictment, the special agent of the FBI testified that the defendant signed a waiver of rights form and was advised that her signing the form was “procedure” and did not mean that she was being arrested. The defendant agreed to take a polygraph test and afterward was told by the investigators that she had been cooperative and would not be prosecuted. Subsequently, the defendant came to the police station and gave a written statement after she was promised immunity from prosecution by the state trooper.
The district court began its discussion by noting that courts have developed the concept of equitable immunity through which they may enforce informal or procedurally flawed grants of immunity on equitable grounds. See, e.g., Rowe v. Griffin, 676 F.2d 524 (11th Cir.1982); United States v. Carpenter, 611 F.Supp. 768 (N.D.Ga.1985). In determining whether such an informal agreement not to prosecute should be enforced, the court referred to a three-part inquiry developed in Rowe:
[A]s a matter of fair conduct, the government ought to be required to honor such an agreement where it appears from the record that: (1) an agreement was made; (2) the defendant has performed on his side; and (3) the subsequent prosecution is directly related to offenses in which the defendant, pursuant to agreement, either assisted with the investigation or testified for the government.
Rowe v. Griffin, 676 F.2d at 527-28.
The Maryland District Court in Cooke had no problem readily recognizing that the promise not to prosecute was made. The court further found that it did not matter that the promise came from a state trooper rather than a federal agent; a joint investigation was conducted, and the defendant had no reason to suspect, absent a complete explanation from the state trooper, that the immunity offered was not full immunity from prosecution. (The state trooper had informed the FBI agent that he told the defendant he would not bring state charges because the FBI was handling the matter.) The Cooke court also found that the defendant’s prosecution was *463directly related to the offense in which she assisted the investigation. The more difficult question district court confronted was whether the defendant performed her side of the bargain. The Commonwealth argued that defendant’s prosecution was not based on any statements made in cooperation with the investigation but was based on subsequent statements made by the arrested perpetrators of the crime that the defendant was not being truthful and was much more involved in the robbery. Thus, the district court found that the defendant’s truthfulness could best be ascertained at trial and, accordingly, deferred decision on the motion to dismiss until after all the evidence had been heard.
We find the three-part inquiry of equitable immunity to be well-reasoned and hereby adopt the same test and apply it in the present case. In the case sub judice, there can be no question that the agreement was entered into between the Shaler police officer and Appellee. A stipulation to this fact was entered into between Appellee and an assistant district attorney and was presented to the trial court. It is also clear that Appellee fully performed his side of the bargain. Without advice of counsel and at his own expense, Appellee hired a polygraph examiner and passed the test. A year later Appellee again took such a test and passed. It is equally clear that the Shaler police officer did not press charges in 1987. Finally, it is also beyond question that the subsequent charges filed against Appellee arose from the very same conduct about which he was questioned in polygraph tests and that there was no new evidence to support the charges. Under these circumstances, it is a matter of “fundamental fairness” that the Commonwealth be bound by the agreement entered into between the police officer and Appellee.
Throughout its appeal, the Commonwealth claims it cannot be held to the agreement because it was not a party or privy to the agreement, that the police officer had no authority to enter into the agreement, and, therefore, that it the agreement is of no legal consequence. As seen in the cases discussed above, the courts of other states, in reaching their decisions, did not explore the authority of the government *464agent making the non-prosecution agreement but instead accepted the apparent authority of the law enforcement agents to bind those involved in a subsequent prosecution. As stated in People v. Fisher, supra:
“[i]t is not constitutionally significant, in our view, that the request for videotaping and the promise of non-use originated with Detective Cain rather than the prosecutor. Detective Cain was no less an agent of the government than the prosecutor and was at least equally as capable of implicating the defendant’s constitutional rights by his request---The People argue that the defendant has no due process right to enforcement because Detective Cain lacked authority to bind Colorado officials. The appropriate consideration, as we see it, is not the power of an Oklahoma City police officer to bind another state, but, rather, the scope of defendant’s due process right to enforce a governmental promise not to use evidence against him, upon which he detrimentally relied in furnishing incriminating information to the police.12
Id. 657 P.2d at 929, n. 11, 930. See also Restatement (Second) of Agency § 8. More significant in these cases is the fact that the defendant fully performed his or her end of the bargain and that equity required the prosecution to uphold its end of the agreement.
The Commonwealth also argues that a less drastic remedy of suppression is available in the present case. However, we note that there is nothing to suppress in the present case; there is nothing of record that indicates what statements were made by Appellee during the polygraph examinations.
Finally, the Commonwealth argues several public policy reasons in support of its claim that agreements entered into *465between municipal police officers and actual or potential defendants should not be binding on the Commonwealth. The Commonwealth argues that such unbridled discretion is beyond the scope of municipal police powers and is an unacceptable impediment to the district attorney’s traditional prerogative to evaluate criminal complaints to determine whether charges should be brought against a suspect. The answer to this concern is that a strict rule regarding non-prosecution agreements cannot be established; it would be foolish indeed for this Court to hold either that all agreements made by police officers during their investigations are binding on the prosecution or, to the contrary, that no agreement made by the police is binding. Instead, the agreement must be judged on a case-by-case basis and must involve the discretion of the trial court which hears the evidence. The three-part inquiry established in Rowe, supra, and followed in Cooke, supra, provides some standards to guide the trial court in its determination and upon which to base appellate review. Moreover, the trial court can look to such factors as whether the defendant waived his constitutional rights against self-incrimination and to counsel, and whether the agreement was entered into before charges were filed or whether the agreement arises after a criminal information was filed. If the agreement with the police occurs after an information is filed, great deference should be paid to the district attorney since the prosecution is now under his control.
In the present case, the record shows that Lieutenant Houser was the sole law enforcement authority involved in investigating the 1987 allegations of child sexual abuse brought against Appellee. The parties reached an agreement that no charges would be brought if Appellee passed a polygraph test. Without advice of counsel, Appellee, noting the seriousness of the charges against him, arranged to take such a test and passed it not once but on two occasions. Lieutenant Houser kept his part of the bargain by not pressing charges. Four years later, different Shaler police officers, with no new evidence of abuse, filed charges stemming from the 1987 allegations. There is no evidence of record that *466Appellee knowingly waived his constitutional rights prior to taking the polygraph tests. Under these circumstances, we find that the trial court did not abuse its discretion in finding that fundamental fairness and confidence in government officials require that the District Attorney be bound by the agreement. Thus, we affirm the grant by the trial court of Appellee’s motion to dismiss.
Order affirmed.
CAVANAUGH, J. files a dissenting Opinion joined by ROWLEY, President Judge, and OLSZEWSKI and POPOVICH, JJ. OLSZEWSKI, J. files a dissenting Statement joined by ROWLEY, President Judge. DEL SOLE, J., joins and files a concurring Statement. FORD ELLIOTT, J., joins and files a concurring Statement.. 18 Pa.C.S. § 3123(5), § 4302, 3126(6), § 6301 and § 4304, respectively.
. The court granted the relief requested by the defendant, namely, the suppression of the videotape. In Commonwealth v. Peters, 473 Pa. 72, 373 A.2d 1055 (1977), our Supreme Court suppressed as involuntary statements made by a defendant because a county detective promised him that the most that would happen to him was that he would be held as a material witness or released on nominal bail. The defendant was *461subsequently charged, tried, and convicted. While we note that the high court found that the prosecution was bound by the promise of the county detective, because he had the apparent authority to enter into such an agreement, we do not believe, as shall be discussed more fully infra, that suppression is the appropriate remedy in the present case.
The problem created by this case is easily avoided by responsible governmental officials instructing and requiring law enforcement officers to refrain from making promises beyond their ability to perform. This is a relatively simple solution within the power of the state whereas, in contrast, a criminally accused cannot realistically be expected to know or discover the extent of a law enforcement officer’s authority in the matter of criminal prosecutions.”