there, call me or one of the family members, and he said, i am speaking to a family member. i'm speaking to my wife and that should be enough for everybody. >> but it was not enough because now a bizarre and horrifying thought had begun to take root and grow. the mengel family suspected that all of those messages were not coming from kevin at all. >> i left another message for him saying, "can you just tell me the name of the street that we grew up on?" just tell me that and i'll leave you alone. >> the police initially didn't even consider kevin a missing person, but now the family begged them to take another look. >> we went back to the police again and pleaded. we tried to think of anything. the kids are home alone, she's not there, you know, anything we could do to get them to go over there. >> detective mower agreed to stop by the apartment and talk to morgan. >> and she seemed genuine, like she wanted to help me. >> morgan invited the detective in and told him the same story,