>> deanna she couldn't put her finger on it, but there was something about keith that was holding her back. maybe it was the fact that he still seemed unusually bound to a woman he called his ex-wife. from the very beginning, he says, keith told her that he was divorced. >> very first conversation. >> i'm a divorced guy? >> right. >> by the time she was sitting across from detective carter in that interview room, deanna says she and keith had never been intimate. they were dating. keith was talking long-term. house hunting. >> he said i don't want to scare you, but i want to -- i'm looking for properties here in morrisville to buy for us to be together. >> for the detective, deanna's story put a whole new spin on the investigation. keith griffith now seemed like a man with a very big secret or was she the one with the secret? >> you could spin it another way and say maybe she wants to get rid of the wife?