bradley miller, a fertility doctor who'd been carrying on an affair with melanie mcguire for more thanears. but when shown the chloral hydrate prescription, dr. miller said someone had forged his signature, and it looked like the forger could be melanie mcguire. we found out, did she have access to prescription pads? and indeed, she did. dr. miller freely admitted to the affair with melanie, but strenuously denied having anything to do with her husband's murder, and he was eager to prove it. higgins: he is what we call a consensual, where he records conversations with her to see if they can't get to the truth of what she had done. when dr. miller pressed melanie in these conversations, she got very cagey. morris: what we learned from listening shocked some seasoned detectives, that we were dealing with a very cunning and chilling woman. narrator: but in another of the wiretap calls, melanie made a crucial mistake. she admitted that she was the person who parked bill's car in atlantic city after the murder. and that meant the nearly invisible human sawdust found in bill's car was almost

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