road again. >> reporter: he watched the february 2001 interview that police did with a very unhappy marty. doesn't it strike you as tremendously suspicious that marty would call after lynsie disappears, talk to lynsie's mother, and give a phony name? >> if you didn't know the background of marty, then absolutely. >> when i talked to the mother on the phone i just gave her an identifier, okay? marty rossler, that's what i said, all right? >> which is a lie. >> which is a lie. >> reporter: watching that interview, larry chalked up marty's dishonesty as an attempt to save his marriage. >> i don't want my wife to be brought into this thing. >> reporter: larry also took a closer look at the idea that marty and lynsie were together at that clothing store after she went missing. >> i flat wasn't there on that day, okay? >> reporter: no one ever found any security video of that, and larry's learned over the years that well-meaning people often