the last person known to have seen kenia monge alive before she disappeared. the man whose strange behavior had ramped up detective gurule's suspicions even though the evidence did not warrant an arrest. but now weeks after kenia vanished gurule had two problems. was missing. so was travis. >> he was gone. i couldn't find him anywhere. i was scrambling to find him. i was checking news. i put out a teletype online for law enforcement saying, you know, you find any bodies give me a call. >> this guy was that dangerous in your mind, that there could be just more -- >> i was calling everybody. was. >> reporter: days passed, then a week. no sign of travis. detective gurule was now working the case almost 24/7. even his wife was involved. >> there was nights where i'd jump out of bed and it would scare her. i'd jump out of bed, grab the phone ring. she'd say did you hear the phone ring? i'd say i'm leaving myself a message because i need to do this. he she said i'd talk in my sleep about it, kenia's name or travis's name. she said you're dreaming about this. >> tenac

oh, it had more than started for kenia monge. swallowed up by, well, whatever it was. >> coming up, kenia's family starts to worry. and that dark presence, whatever it might be, had it come for their own daughter? >> that's when i went into high alert. donald's all day breakfast menu. yeah! it's time to start breaking some rules. olay regenerist renews from within, plumping surface cells for a dramatic transformation without the need for fillers with olay, you age less so you can be ageless uh right now you can get 15 gigs for 100 bucks plus $15 per line that is perfect because we are long distance thing yeah and lots of data will mean lots of video chatting how much is that? 15 gigs, that's over 40 hours of video chatting wow whoa 40 hours, that's a lot of communication yeah yay love! get 15 gigs for 100 bucks, >>> april 1st, 2011. dawn in denver, colorado. bright, spring-like. and for the friends of kenia monge, terrifying. >> i just kept calling her and calling her. we were all worried and scared. >> reporter: where was she? he