he was searching. >> so larry montgomery turned his attention to chris mccanus, guilty or innocent? last person known to be with lynsie. he told police he drove straight home after dropping lynsie off. and police found that photo of what looked like his truck heading north away from lynsie's neighborhood which took him past this atm camera. >> the video from the atm camera, police at the time saw that as not ironclad proof that chris was telling the truth but suggestive that what he said he actually did. >> correct. >> but when larry compared photos of chris's truck with the photos from the bank, he saw something no one else had noticed. the paint on the back of the side view mirrors on chris's truck was white. >> what about the truck in the photo? >> truck in the photo had a dark spot in the photo. >> so it's not the same truck? >> that's right, it's not. >> suddenly chris's alibi had a big hole in it. larry moved on to chris's history with women. two ex-girlfriends talked to police about how chris would come unhinged by rejection or what he called disrespect. larry heard about how