never believed the medicine cabinet story. I’d been at Rockingham all through the second search, and the rooms had been taken to pieces by officers looking specifically for that knife. But the question was largely academic. The knife didn’t matter. It is too easy to boil a knife to destroy traces of blood and tissue. It is not difficult to go out and buy a duplicate. No coroner could say with certainty that it was the murder weapon. Knives, unlike guns, do not smoke: they do not leave proof-positive evidentiary calling cards. If I’d really pressed to get it into evidence, however, I’m sure
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