Dan Simon wrote, "When the evidence items are not truly independent of one another, they create a false sense of corroboration. In other words, a full-bodied set of inculpatory evidence can be a misleading artifact of the investigative process. Indeed, in a number of known wrongful convictions, the case presented to the jury consisted of strongly corroborating evidence, all of which turned out to have been false.160"
160For illustration, a capital prosecution of an innocent Maryland man included identifications by five eyewitnesses, a shoe impression, and a putatively incriminating statement made by the defendant, all leading the prosecutor to describe the evidence as being "extremely strong." SCHECK ET AL., supra note 116, at 222. For more on this investigation and trial of Kirk Bloodsworth, see TIM JUNKIN, BLOODSWORTH 39, 85-86, 136-37 (2004).
Of course there was no confession in the Luke Mitchell case, nor in the Bloodsworth case. My general point is that if evidence in any case seems to be independent but is not, then the case looks stronger than it actually is. With respect to the Mitchell case, the 2008 denial of appeal claimed that the accounts of Ms. Bryson and Ms. Fleming/Ms. Walsh corroborated each other, a claim that Sandra Lean rebutted.
Dan Simon wrote, "Factfinders would gain much by being able to compare witnesses' courtroom testimony with the exact statements they initially gave the police." There were times that Donald Findlay attempted to point this out, but the jury in the Mitchell case was apparently unpersuaded.