OPINION
Opinion by
Justice LANG-MIERS.A jury found appellant Nicholas Ger-maine Garter guilty of delivery of four grams or more, but less than 200 grams of cocaine, enhanced by one prior conviction, for which the tiial court assessed punishment at imprisonment for seventeen years. Appellant complains on appeal that the evidence is factually insufficient to support his conviction and that the trial court erred when it admitted evidence of an extraneous offense during the guilt/innocence stage of the trial. Because appellant was harmed by the admission of the extraneous offense, we reverse the trial court’s judgment and remand for a new trial.
BACKGROUND
A Dallas undercover police officer working the narcotics division drove his green Mustang to a suspected drug house. Initially, the officer stayed in his car in the driveway and talked to appellant who was standing on the front porch. He told appellant that he was interested in purchasing five pounds of marijuana. They went into the house and appellant told the officer that it “could be done.” He asked him to leave his phone number, which the officer did. The officer came within six to seven feet of appellant.
The officer returned to the house on December 31. When he knocked on the front door, a young man instructed him to go around back. The officer knocked on the back door and a different man looked out a window. He told the officer to come over to him. The officer could see the man somewhat, but the curtain partially obstructed his view. The man at the window asked what the officer wanted. The officer, who was less than two feet away from the man, replied that he wanted to buy $220 worth of “solids,” which are larger pieces of crack cocaine. The man replied that he only had “quarters,” and they began arguing. The officer told the man at the window to go get the guy in front because he knew the officer. The man indicated that he would not need to because he recognized him. Specifically, he said, “I know you — you drive the green Mustang.” The officer asked him why he did not call back about the marijuana, and appellant told him he had tried to call him. During this conversation, the officer recognized the man at the window to be appellant.
The young man from the front door stepped up and asked the officer how *706much crack he wanted. The officer handed him the $220. Appellant then took the money from the young man and directed him to give the officer the drugs. Appellant also said he would check on the “green,” meaning the marijuana. The young man came back to the window and gave the officer several large pieces of crack cocaine. The officer then left. The officer was about one foot away from appellant for roughly two minutes.
The undercover police officer returned to the house approximately two weeks later. He entered the house to get a better layout in order to prepare to execute an arrest and search warrant. The officer had a two-minute conversation with appellant, at which time the officer noticed a tattoo of a Playboy bunny by appellant’s right eye. He had not seen it before. The officer, along with several other officers, entered the house a few days later to execute the warrants. Appellant was found in the living room within reach of a double-barrel shotgun. The first police officer to enter the house ordered appellant to get down on the ground. Because appellant refused, the officer took him down with force. Appellant’s briefcase was in the bedroom, along with several documents belonging to appellant. The address of the house where the drug-buy occurred was not on any of those documents. The officers found cocaine in a back room and marijuana in the den. A runaway juvenile was also present in the house during the drug-bust.
At trial, the undercover police officer identified appellant as the man from whom he purchased the drugs. He admitted that he did not see the Playboy bunny tattoo on appellant’s face until his third trip to the house. He also stated that he had not noticed appellant’s gold teeth or another tattoo until trial and he did not make any notation in his report about appellant’s facial hair.
Appellant did not testify at trial, but his girlfriend testified that on the day of the drug sale appellant spent the day at her house with her children. Appellant did not have transportation to leave her house because she had the car. She admitted that she could not say appellant was at her house all day because she was at work from ten in the morning until approximately nine at night. She also acknowledged that she was on probation for securing execution of a document by deception. The girlfriend’s teenage daughter testified that appellant spent the day with her and her siblings and that he was never out of her sight except when he went to the bathroom or to the kitchen to get something to eat. She also stated that appellant was still asleep at approximately the same time the drug transaction purportedly occurred.
EXTRANEOUS OFFENSE
In his second issue, appellant complains that the trial court erred when it admitted evidence that three grams of cocaine were found in a back room of the house at the time appellant was arrested. During cross-examination, defense counsel asked the undercover police officer, “When the arrest was made on the ... 17th of January, no narcotics were discovered on the person of Mr. Carter.” The officer replied, “That is correct.” The State argued at a hearing outside the jury’s presence that, by the question, appellant had opened the door to admit evidence that cocaine was found in plain view on top of a refrigerator in a back room of the house. Appellant made a rule 404 objection, contending that the cocaine could not be legally deemed to be under appellant’s “care, custody or control” because nothing established that he lived there, and documents bearing his *707name that were found in another room of the house identified a different address for him. The State responded that because the defense could argue that no drugs were found in appellant’s possession, the State should be able to argue that although the drugs were not in his possession, they were within his care, custody, and control, which was “a matter of weight for the jury to decide.” The court agreed, stating that the presence of the cocaine was “res gestae of the offense.” Accordingly, the judge allowed the evidence to be presented to the jury. Appellant did not make a rule 403 objection that the evidence should be excluded because its probative value was substantially outweighed by the danger of unfair prejudice. See Tex.R. Evid. 403.
Evidence of extraneous offenses is generally not admissible. Tex.R. Evid. 404(a). However, rule 404(b) allows evidence of other crimes, wrongs, or acts if the evidence has relevance apart from character conformity. Tex.R. Evid. 404(b). Evidence of other crimes, wrongs, or acts may be admissible to prove identity or intent, to establish motive, or to show opportunity or preparation. Id.; Moses v. State, 105 S.W.3d 622, 626 (Tex.Crim.App.2003). This is only true, however, when the evidence is shown to be material and relevant to a contested issue in the case. Abdnor v. State, 871 S.W.2d 726, 738 (Tex.Crim.App.1994). “Same transaction contextual evidence is admissible as an exception under Rule 404(b) where such evidence is necessary to the jury’s understanding of the instant offense .... ” Rogers v. State, 853 S.W.2d 29, 33 (Tex.Crim.App.1993).1 And “otherwise inadmissible evidence may be admitted if the party against whom the evidence is offered ‘opens the door.’ ” Schutz v. State, 957 S.W.2d 52, 71 (Tex.Crim.App.1997).
We review rulings on the admissibility of evidence under an abuse of discretion standard. Weatherred v. State, 15 S.W.3d 540, 542 (Tex.Crim.App.2000). The trial court will not be overturned as long as its ruling is within the zone of reasonable disagreement. Id. If the trial court’s evidentiary ruling is reasonably supported by the record and is correct under any applicable theory of law, we must uphold it. Trevino v. State, 991 S.W.2d 849, 855 (Tex.Crim.App.1999). This is true even when the trial court gives the wrong reason for its decision. Romero v. State, 800 S.W.2d 539, 543 (Tex.Crim.App.1990).
Same Transaction Contextual Evidence
We agree with appellant that the admission of evidence and testimony that cocaine was seized in the house where appellant was arrested on January 17 was not same transaction contextual evidence of the December 31 cocaine sale. Same transaction contextual evidence conveys to the trier of fact information essential to understanding the context and circumstances of events which, even though they involve legally separate offenses, are blended together and interwoven. Camacho v. State, 864 S.W.2d 524, 532 (Tex.Crim.App.1993). “Only if the facts and circumstances of the instant offense would make little or no sense without also bringing in the same transaction contextual evidence, should the same transaction contextual evidence be admitted.” Rogers, 853 S.W.2d at 33. In this case, the jury’s understanding of the charged offense *708would not have been impaired or clouded had the State described appellant’s later arrest without including the evidence that cocaine was found in the house when appellant was arrested.
Opening the Door
Otherwise inadmissible evidence may be admitted if the party against whom the evidence is offered “opens the door.” Schutz, 957 S.W.2d at 71. But the party offering the evidence may not stray beyond the scope of the invitation. Id. Appellant’s counsel asked the officer to confirm that no narcotics were discovered “on the person of’ appellant at the time of the arrest. The question did not “open the door” to allowing testimony that cocaine was found in a different room than the room in which appellant was arrested, in a house that was not proven to belong to appellant, and where another person was present, and others had been present, every time the officer had been there. Consequently, the evidence strayed “beyond the scope of the invitation.”
Intent or Knowledge
The State contends on appeal that the evidence was admissible to establish identity. However, the evidence was not admitted or considered for that purpose at trial. The jury instructions provided:
You are instructed that if there is any testimony before you in this case regarding the defendant’s having committed offenses other than the offense alleged against him in the indictment in this case, you cannot consider said testimony for any purpose unless you find and believe beyond a reasonable doubt that the defendant committed such offenses, if any were committed. And even then you may only consider the same in determining the intent of the defendant and knowledge of the defendant, if any, in connection with the offense, if any, alleged against him in the indictment in this case, and for no other purpose.
In addition to the jury instructions, the State argued to the jury “that for you to consider [the extraneous offense] in any way as to the defendant’s intent or knowledge, you first of all have to believe that he’s in possession of [the cocaine].”
Extraneous offense evidence is relevant if it logically makes elemental facts, such as intent or knowledge, more or less probable, or if it makes the defense’s evidence, attempting to undermine these elemental facts, more or less probable. Montgomery v. State, 810 S.W.2d 372, 387-88 (Tex.Crim.App.1991) (op. on reh’g). Evidence of extraneous offenses may be admissible to prove scienter, but only where intent or guilty knowledge is an essential element of the State’s case and cannot be inferred from the act itself. Prior v. State, 647 S.W.2d 956, 959 (Tex.Crim.App.1983). In this case, appellant’s defense was that he was wrongly identified, that he did not commit the offense, and that he was somewhere else when the drug sale took place. He did not argue that he sold the cocaine but did not know it was cocaine or that he did not intend to sell it. Consequently, the extraneous offense — the fact that cocaine was found in a different room of the house from the one in which he was arrested and on a different occasion from the time he was seen actually selling cocaine — does not tend to make the existence of a material fact in this case, that is whether he sold the cocaine on December 31, more or less probable. See Rankin v. State, 974 S.W.2d 707, 719 (Tex.Crim.App.1998) (op. on reh’g) (holding that when State’s direct evidence clearly showed intent and was uncontra-dicted by defendant, offer of other crimes is unjustified due to lack of relevance); *709Owens v. State, 827 S.W.2d 911, 916 (Tex.Crim.App.1992) (holding that extraneous offense evidence was inadmissible where only fact to be resolved was whether criminal offense occurred as alleged); Montgomery, 810 S.W.2d at 397 (holding that admission of extraneous acts was abuse of discretion where State had no compelling need for evidence to prove intent).
The dissent states that “the trial court could have reasonably determined that appellant’s subsequent act of being in the house with cocaine in the back room and a shotgun nearby tended to make more probable the allegation that appellant intended to deliver the cocaine in the charged offense.” However, the cited cases involved situations in which there was conflicting evidence on the specific issue of intent, not merely where intent was an element of the crime. See Rubio v. State, 607 S.W.2d 498, 601 (Tex.Crim.App.1980) (holding that when intent is placed in issue, the State may offer extraneous offenses relevant to that contested issue). In this case, the extraneous offense evidence was not properly admitted to prove intent or knowledge.
Identity
We agree that an extraneous offense may be admissible to show identity when identity is an issue in the case. Lane v. State, 933 S.W.2d 504, 519 (Tex.Crim.App.1996). The dissent, citing Siqueiros v. State, 685 S.W.2d 68, 71 (Tex.Crim.App.1985), states that “[w]hen the State’s only identifying witness is impeached on cross-examination, raising the issue of identity, the extraneous offense becomes admissible.” However, we read Siqueiros differently. The court in Si-queiros held that an extraneous offense is admissible to prove identity when the following two factors are present: (1) identity is a contested issue in the case; and (2) something unique exists that connects the extraneous offense to the charged offense — “some distinguishing characteristic common to both the extraneous offense and the offense charged.” Id. In other words, there is a two-part test for determining when an extraneous offense is admissible for proof of identity. Thus, an extraneous offense does not become admissible simply because an eyewitness is impeached on cross-examination about the identity of the perpetrator. Impeachment is simply one way that identity may become an issue.2 A defense strategy aimed at undermining the witness’s identification, such as occurred in this case, also raises the issue of identity. Id. Consequently, although we agree with the dissent that identity is an issue in this case, we do not agree that it is the only factor in determining whether an extraneous offense is admissible. If there was no second part to the test, extraneous offenses, no matter how unrelated or dissimilar, would generally be admitted if any question was raised about the identity of the defendant.
In this case, the connection was not even as strong as the cases cited in the dissent because the extraneous offense here was completely different from the charged offense. At the time of his arrest, appellant was present in a house where cocaine was found in the same room from which it had been previously sold. That is quite a bit different from the act of selling cocaine out of the back window of that house, which is the offense appellant was *710charged with committing. Additionally, someone else was in the house, appellant was not proven to own the house, and other people were always in the house on the previous occasions when the officer was there. We should not engraft exceptions to rule 404 that would allow extraneous offenses to be admitted when identity is an issue absent a distinct connection between the charged and the extraneous offenses. As a result, the evidence was not properly admitted under rule 404(b) to prove identity and only served to allow the jury the opportunity to convict appellant based on character conformity.
Conclusion
The cocaine found on the day of the arrest did not serve to make a fact of consequence more or less probable. It simply showed that cocaine was discovered somewhere on the premises where appellant was arrested. See Alexander v. State, 88 S.W.3d 772, 777-78 (Tex.App.-Corpus Christi 2002, pet. ref'd) (holding that presence of revolver in residence where appellant was arrested was not relevant to any fact of consequence and was thus erroneously admitted). We conclude the trial court erred, therefore, when it admitted evidence of the cocaine at trial.
HARM ANALYSIS
Having determined that the evidence was erroneously admitted, we must now decide whether the admission of this evidence was so harmful as to require a new trial. The introduction of extraneous offenses to the jury is inherently prejudicial and harms the defendant because it requires the defendant to defend against not only the offense charged, but also his uncharged actions. Abdnor, 871 S.W.2d at 738. The admission of the extraneous offense also prejudices the defendant because of the jury’s natural inclination to infer guilt of the charged offense from the extraneous offenses. Id. Here, the complained-of error is not of constitutional dimension. See DeLeon v. State, 77 S.W.3d 300, 316 (Tex.App.-Austin 2001, pet. ref'd). We must, therefore, disregard the error if it did not affect an appellant’s substantial rights. See Tex.R.App. P. 44.2(b). A substantial right is affected when the error had a substantial and injurious effect or influence in determining the jury’s verdict. King v. State, 953 S.W.2d 266, 271 (Tex.Crim.App.1997). However, “[a] criminal conviction should not be overturned for non-constitutional error if the appellate court, after examining the record as a whole, has fair assurance that the error did not influence the jury, or had but a slight effect.” Morales v. State, 32 S.W.3d 862, 867 (Tex.Crim.App.2000). If one cannot say with fair assurance that the judgment was not substantially swayed by the error, it is impossible to conclude that substantial rights were not affected. Fowler v. State, 958 S.W.2d 853, 865 (Tex.App.-Waco 1997), aff'd, 991 S.W.2d 258 (Tex.Crim.App.1999) (citing Kotteakos v. U.S., 328 U.S. 750, 765, 66 S.Ct. 1239, 90 L.Ed. 1557 (1946)). The inquiry cannot be merely whether there was enough evidence to support the result, apart from the phase affected by the error. Id. It is, rather, whether the error itself had substantial influence. Id. If so, or if one is left in grave doubt, the conviction cannot stand. Id. “The very process of reaching this decision is the performance of a Rule 44.2(b) harm analysis.” Llamas v. State, 12 S.W.3d 469, 471 n. 2 (Tex.Crim.App.2000).
In assessing the likelihood that the jury’s decision was adversely affected by the error, the appellate court should consider everything in the record, including any testimony or physical evidence admitted for the jury’s consideration, the *711nature of the evidence supporting the verdict, the character of the alleged error, and how the evidence might be considered in connection with other evidence in the case. Morales, 32 S.W.3d at 867. The reviewing court might also consider the jury instructions given by the trial judge, the State’s theory, any defensive theories, and closing arguments. Id.
Discussion
In determining the magnitude of the harm resulting from the erroneous admission of the eomplained-of evidence, we have examined, reviewed, and considered the whole record. The testimony regarding the presence of three grams of cocaine in the house where the original drug sale occurred was highly prejudicial because it involved the same drug and implied to the jury that appellant was selling drugs at the house on the day of the arrest, although there was no such evidence. The undercover officer testified that he believed appellant was in “possession” of the cocaine. During jury argument, the prosecutor asked the jurors to consider this evidence in resolving the issue of appellant’s guilt. Specifically, she argued as follows:
And why is he in possession of that cocaine? Well, there’s only two people in here, just like every other time we see this defendant. There’s only two people here. One’s him, and one’s the juvenile. He is in possession of that house. And what’s in that house in open view back here? I mean, he’s here basically right next to the double barrel shotgun. Back here you’ve got that cocaine in open or plain view right in back here, right in back there where we know he was on the 31st of December. And you remember his statement, “We just have quarters.” Look at what we have here. Some tens, some all the way up to 30’s, including quarters. He’s in possession of that. In response to what Ms. Lollar brought out, well, did he have drugs on him? No, he didn’t. But he’s in possession of what’s right here.... [R]ealize that on this day, the defendant is here right next to this gun with cocaine in the back where the delivery happened. I ask you to return a verdict of guilty based on the credible, believable evidence.
During deliberations, the jury asked the court to allow it to hear the “verbal exchange between the officer and defendant that leadfsic] the officer to state that he could identify the defendant through the back window.” The jury had difficulty reaching a verdict, as evidenced by the presiding juror’s note that “the jury is deadlocked.” The jury finally reached a verdict after the court sent it instructions to continue deliberating. After reviewing the record, we have grave doubts about whether the jury was induced to convict by the “character conformity” evidence. We cannot say that we have fair assurance that the error did not influence the jury, or had but a slight effect on the jury’s verdict. Morales, 32 S.W.3d at 867. We sustain issue two.
Because we conclude issue two is dispos-itive of the appeal, we do not reach issue one. We reverse the trial court’s judgment and remand for a new trial.
BRIDGES, J., dissenting.
. "Res gestae” was a term previously used to describe background evidence. Mayes v. State, 816 S.W.2d 79, 86-87 (Tex.Crim.App.1991). Background evidence is now referred to as either same transaction contextual evidence or background contextual evidence. Id.
. The police officer never wavered in his testimony that appellant was the person who sold him the drugs. He was cross-examined, however, which highlighted the defense's position that perhaps the officer did not get as good a look at the drag dealer as he thought. But even if the officer was impeached, the extraneous offense would not have satisfied the second prong of admissibility.