delivered the opinion of the Court.
On Mаrch 9, 1990, while working undercover, Officer Derek Young of the City of Norfolk Police Department purchased cocaine from a man he previously had seen on approximately 12 occasions. On April 11, 1990, Young identified Norman Miltоn Bowman, Jr. from a photographic lineup as the individual who had sold him the cocaine. At the time of the drug transaction, Bowman was approximately six feet two inches tall and weighed 194 pounds.
At the trial in the Circuit Court of the City of Norfоlk, the Commonwealth asked Young to describe Bowman’s appearance at the time of the offense. Based on a report he had filed following the drug purchase, Young stated, “I described Mr. Bowman being approximatеly five-foot-eight, 150 pounds, black hair, brown eyes.” Bowman’s counsel argued that the apparent discrepancy between Bowman’s actual height and weight and Young’s direct testimony based on his report affected Young’s credibility аnd was exculpatory evidence. After the trial court denied Bowman’s motion to dismiss based on the prosecution’s failure to disclose this evidence, Bowman sought access to the report to determine whether it contained additional exculpatory material.
The trial court refused to require production of Young’s report, but allowed Bowman’s counsel to cross-examine Young regarding the apparent discrepancy. The trial court also denied Bowman’s requests that it review the report in camera and that it place the report under seal in the record for appeal. Following a bench trial, Bowman was found guilty of distributing cocaine, in violation of Code § 18.2-248, and wаs sentenced to seven years in prison.
Bowman challenged his conviction, arguing that the trial court committed reversible error by refusing to order the Commonwealth to produce the report, by refusing to review that report in camera, аnd by failing to make the report a part of the appellate record. The Court of Appeals affirmed the conviction in an unpublished opinion. We granted Bowman an appeal, and he raises the same issues hеre.
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In
Brady
v.
Maryland,
In this case, Bowman filed a pre-trial motion for disсovery pursuant to Rule 3A:11, requesting,
inter alia,
production of any exculpatory evidence discoverable under
Brady
and under
Stover
v.
Commonwealth,
Exculpatory evidence is material if there is a reasonable probability that the outcome of the proceeding would have been different had the evidence been disclosed to the defense. A “rеasonable probability” is one which is sufficient to undermine confidence in the outcome of the proceeding.
United States
v.
Bagley,
*134
Our role in assessing whether the availability of this information would have produced a different result is difficult. We must look at the totality of the сircumstances with an awareness of the “difficulty of reconstructing in a post-trial proceeding the course that the defense and the trial would have taken had the defense not been misled by the prosecutor’s incomplеte response” to the pre-trial request for
Brady
information.
Bagley,
Bowman did learn of the height and weight discrepancies during the trial and was allowed to cross-examine Young on that issue. We cannot conclude that the failure to disclose this information earlier prevented Bowman from effectively using the information for purposes of challenging Young’s credibility. However, we reach a different conclusion in considering the effect of nondisclosure on Bowman’s dеfense of mistaken identity.
Bowman’s position at trial, and here, is that Young made a mistake when he identified Bowman as the cocaine seller. He points out that the cocaine purchase occurred late at night, 11:45 p.m., аnd that Young was in Bowman’s presence for only five to six minutes during the purchase. Finally, the photographic identification of Bowman was made over 30 days after the cocaine purchase. These circumstances may suggеst the possibility of a mistaken identity; however, Bowman argues that other factors, unknown to him, which, if known, could have led him to take further actions to develop this defense. The first of these factors is, of course, the size discrepancy. Additionally, Bowman has a two-inch long vertical scar and a three-quarters of an inch long horizontal scar on his forehead. Young testified that these scars were not listed in his report as distinguishing characteristics. This omission, along with thе size discrepancy, Bowman asserts, further supports the possibility of mistaken identity. With such additional potential support for the mistaken identity defense, Bowman’s counsel indicated at trial that he would have undertaken such actiоns as subpoenaing at least some of the persons in the pictorial lineup to determine their height, weight, and the amount of time they spent in the area where the cocaine was purchased.
Considering the totality of the circumstances, we conclude that, had Bowman been aware of the discrepancy between Young’s report and Bowman’s actual size, and Young’s failure to mention Bowman’s facial scars as identifying features in the report, Bowman reasonably may have taken different and poten
*135
tially significant actions which could have strengthened Bowman’s defense. As in
Bagley,
when Bowman’s counsel did not receive Young’s report or any part of it in response tо his pre-trial request for
Brady
material, it was reasonable for defense counsel to assume that no such evidence existed and “to make pretrial and trial decisions on the basis of this assumption.”
Bagley,
On remand, Bowman may again seek production of Young’s rеport. Since the Commonwealth may continue to refuse to produce the report, we will address Young’s other contentions, i.e., that the trial court should have reviewed the report in camera to determine whether it contained additional exculpatory evidence and should have made the report part of the appellate record.
Bowman sought the report because he suspected that it might contain additional discrepancies or other exculpatory evidence which he could use in his mistaken identity defense. The prosecution maintained that the information in the report contained no exculpatory evidence. Bowman sought the trial court’s intervention to resolve this impasse by reviewing the report in camera and by determining whether it contained any further potentially exculpatory material.
In situations such as the one presented here, where the prosecution and defense are at an impasse in their respectivе views of the nature of the evidentiary materials, other courts have sanctioned an
in camera
review of the disputed
Brady
material to resolve the impasse.
Ritchie,
The trial court’s determination of the question whether it should undertake the review of the disputed material is a discretionary matter. Whether thаt discretion was properly exercised will depend on the specific factors of each case, such as the rea
*136
sons given by the defense in justifying access to the disputed material, the time of the request, or the amount of material involved.
Agurs,
In this case, the discrepancies already discovered from Young’s testimony provided a legitimate basis for Bowman’s belief that the report might contain additional material exculpatory evidence. The trial court was not asked to undertake a burdensome review of unlimited amounts of material, but оnly to review a single report which was apparently short in length. Finally, the review was the only viable method of resolving the issue in this case. Similar factors have been cited as requiring an
in camera
review by the trial court in other cases.
See, e.g., Alexander,
We, of course, could conduct the review of the report and resolve the matter here, if the report were part of the appellate record. We cannot make this determination because the trial court refused Bowman’s request to make Young’s report part of the appellate record. Bowman has assigned that refusal as error and we agree. * Therefore, on remand, the trial court will have to review the report, and, if it finds that the report contains additional evidence to which Bowman is entitled under Brady, such evidence will be disclosed to Bowman prior to commencement of a new trial.
For the reasons set out above, we will reverse the judgment of the Court of Appeals and remand the case to the Court of Appеals for entry of an order granting Bowman a new trial and instructing the trial court to review Young’s report to determine *137 whether it contains further material and possibly exculpatory evidence.
Reversed and remanded.
Notes
The Commonwealth argued that Bowman’s еntire appeal must fail by procedural default, since Bowman failed to make the report, on which his claims are based, a part of the appellate record and since “nothing the trial court said or did prevented him from doing so.”
We reject the Commonwealth’s contention because it is not supported by the record:
[Bowman’s Counsel]:
But could we at least place that report under seal for appellate purposes?
The Court:
I just don’t feel we have that situation, sir. I don’t feel we have that.
