Strozzi
Graduate Poster
. . . I would like to know how Meredith's DNA could have found it's way to the knife without any other DNA being on it. What do the negative control tests tell us. Clearly there is something there that shouldn't be but how does it turn into Meredith's DNA and only hers?
Stefanoni's purpose in testing the knife was to find Meredith's DNA on it, along with either Raffaele's or Amanda's. At the time she tested the knife Stefanoni knew the prosecutor and police had already extracted Amanda's confession and locked her and Raffaele up, and were crowing to the press what evil killers they had outsmarted and captured.
If Stefanoni wanted to help the evidence along, could she have placed an item with Meredith's DNA in the machine, thereby deliberately contaminating the machine, and then removed it before turning the machine on and logging a run? And follow that by doing a recorded test of matter she claims to have taken from the knife blade? If she had just contaminated the machine, would it be logical to then stop using that machine so the next logged tests do not show that the machine was dirty?
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