she wasn't anywhere near florida when david disappeared. >> i was in arizona in the apartment. i was nowhere around here. >> and lacking any further evidence, the detective was the man barbara was ater unless married to at the time knew something, michael wolf. a little checking revealed wolf had been married seven times. number six, a woman named nancy graham lived in alabama. she called her. >> i told her, i'm investigating the disappearance of david jackson. and she said to me, how much evidence do you have against him. and i said i can't discuss the evidence with you but i can tell you that it's enough for me to put him away right now. i was just totally bluffing. i had really nothing. i'm just throwing it out there,