there was something chanin's killer apparently didn't realize. chanin may have just taken a shower.r looked like it was air-dried. narrator: that meant her body might provide a good, freshly cleaned template for the killer's dna. if there's any kind of suspicions that someone may have been manually strangled, typically, the medical examiner will take swabs of the neck. narrator: while those swabs were being taken, detectives continued processing the scene. soon, chanin's ex-husband, clay, who lived about a mile away, arrived. i told him that chanin was found and that she was dead. and upon that news, he almost collapsed on the ground. shover: he was very upset. of course, he wanted to go in there. he wanted to see her. i told him he couldn't. it was a crime scene, and we were gonna secure the residence immediately. narrator: clay told police that chanin had been out of contact for about two days, which was out of character, and a big problem for detectives. johnston: at that particular time, we're not certain when chanin was murdered. narrator: and chanin's autopsy didn't provide mu