but casandra? she'd never heard of casandra. barbara evanson: and i'm thinking, who the heck are you? and i was like, ok, that's nice. but who are you? and i'm like, i'm not telling you anything. so i put the brakes on it, even though i'm very concerned that taylor's missing. keith morrison (voiceover): casandra also called a woman named nancy murchison, who helped raise taylor as a teenager. and she'd heard of casandra, knew she was a friend. but-- after taylor went missing, she called me and said, you know taylor and i are in a relationship. i said, no, no, i didn't know that. so she didn't tell you? no, she didn't tell me. well, i mean, when taylor went missing, here's this person, casandra, she just moved in with and-- [sighs] the more the story unfolded, i started thinking, is she involved in this? keith morrison (voiceover): the question the police had to consider, too-- if this taylor person hadn't just left, then did casandra have something to do with whatever did happen? they went to her house, searched through taylor's