police had arrested her boyfriend, hunter foster, on drug charges. ce. 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. >> 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. >> hunter foster actually dealt to an undercover agent. >> so on the night christina vanishes, hunter is selling drugs to an undercover officer? >> yes, sir. >> then, less than a week after hunter's arrest, police had something else to announce. enrique arochi was under arrest for kidnapping christina morris, though police believed he had murdered her. >> i can't even explain the emotions and the pain. my whole world was turned upside down. >> you knew she was gone then? >> y