>> linda sohus is the writer of the two postcards that you examined? e testimony of sandra boss, hails that seemed to suggest their client was the most clever car man alive. well, why would so nimble a scheme, commit such a crude murder, varying his victims remains in plastic book bags, from universities he attended? >> that person would also be one of the stupidest murderers in the history of california. he is a's master con, master manipulator, mastermind that they make him out to be. he is going to kill somebody, very ten feet from where he lives, essentially leaving a plaque saying hey, guys, it is me that killed him. >> enough doubt, the defense thought. if not for a quibble, then at least to hang the case. but prosecutors were ready, they examined and eliminated the linda did it very. just before trial, they thought they solved the mystery of the postcards supposedly sent from paris. the common, it would show, had someone in europe mail them for him. he had done it before, a college girlfriend, producing a postcard he supposedly sent to her from l