alabama way back in 1957, years before bart was born. the d.a. did know bart had a friend in troy, alabama, named richard wilson. >> so i dispatched investigators to alabama for the first time on december the 15th of 2004 to talk to richard wilson in troy, alabama. he initially says that the only thing he knows is that he had talked to bart and learned that jennifer had died. and he tells us he doesn't know anything about a gun. >> investigators also used bart's cell phone records to map his movements on that fatal night. bart said he was at his brother's house around 2:00 a.m., jennifer's estimated time of death. but cell phone records put him right near the house where jennifer died. >> that's the first critical piece of information that blows his alibi out of the water. it puts him at the residence at about quarter of 2:00 in the morning until about 5 after 2:00 in the morning, and that's the