♪ let me get a mcpick 2 ♪ ♪ karl, have you met everyone?human perception, an illusion, like this one. help, i can't breathe! which means there's no pressure to get a great rate on a hotel. they're available for an unlimited time, always. so, book now. or don't. no pressure. ♪ >>> by early december, christina morris hadee missing for three mo police had arrested boyfriend, hunter fo drug charges. investigators had th might have something christina's disappea but when they looked tower and tollway reco realized hunter's solid. >> his cell phone is dallas. his toll tag shows h to dallas that eveni everything indicates >> which is not anyw where she was gettin >> 20, 25 miles away >> and the reason hunt reluctant to give up well, it had nothing christina. hunter was dealing d night and the proof, customers was a narc >> hunter foster act to an undercover age >> so on the night c vanishes hutter is s to an undercover off >> yes, sir. >> then less than a hunter's arrest, pol something tolles ann enrique arochi was u for kidnapping chris but polic

♪ let me get a mcpick 2 ♪ ♪ karl, have you met everyone?ruct of human perception, an illusion, like this one. help, i can't breathe! which means there's no pressure to get a great rate on a hotel. they're available for an unlimited time, always. so, book now. or don't. no pressure. >>> reporter: by early december 2014, christina morris had been missing for three months. police had arrested her boyfriend, hunter foster, on drug charges. investigators had thought he might have something to do with christina's disappearance. but when they looked at cell tower and tollway records, they realized hunter's alibi was rock solid. >> his cell phone is down in dallas. his toll tag shows that he came back to dallas that evening. everything indicates he's in dallas. >> which is not anywhere near where she was getting into her car? >> 20, 25 miles away. >> reporter: and the reason hunter was so reluctant to give up his phone? well, it had nothing to do with christina. hunter was dealing drugs that night. and the proof? one of his customers was a narc. >>