as far as you know, did lindsey know a guy named marty? no. he said he had money of lynsie s that she needed for tuition. none of that made sense to nancy. after lynsie goes missing, nancy gets a phone call from a guy named marty. marty rossler. and what does he say to her? marty says that he s befriended lynsie, i s concerned because he hadn t heard from her. what did you hearne about marty rossler? marty rossler was not marty rossler. marty rossler was really marty preginser. he hadn t told his wife about the relationship. he toil police ed aoften pick lynsie up and give her rides, and that was about it. marty was 58. and she was 20. and they were boyfriend/girlfriend? don t think so.
call, from a guy named marty. marty rossler. reporter: and what does marty say to her? marty says he befriended lynsie, he s a friend of lynsie s and he s concerned because he hadn t heard from her. reporter: what did you learn about marty rossler? marty rossler was not marty rossler. reporter: marty rossler was really marty pregenzer. he did not have a criminal record. what he did have was a relationship with lynsie he hadn t told his wife about. he told police he often picked lynsie up and give her rides, but that was about it. marty was 58. and she was 20? she was 20. reporter: they were boyfriend and girlfriend? don t think so. reporter: so police brought in marty. over two days they recorded those interviews. at times on video and sometimes just on audiotape. when is the last time you saw lynsie? a week ago. no. i don t think so.
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, absolutely. when i talked to the mother on the phone, i just gave her an identifier. okay. i mean, marty rossler, that s what i said. 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. no one ever found any security video of that and larry learned over the years that well meaning people often get dates wrong. and larry learned a key fact. marty had actually participated in those early searches for lynsie.
we did look at lynsie s mother. you have to. so i made my cookies and all this kind of silly stuff that i always do. reporter: make some coffee, right, yeah. yeah. reporter: the cops weren t coming for coffee. they arrived with a search warrant, shovels, and cadaver dogs. i was shocked that they even suspected me. i didn t know what even a search warrant was. reporter: the house nancy and lynsie had once shared was torn apart. how much of a suspect was nancy? i don t know that nancy was on the radar for a long time. she was on the radar long enough to be able to set her aside. reporter: after that search, they did just that. they believed this anguished mother had nothing to do with the disappearance of her daughter. so they took nancy off the list. they also took off the boyfriend, matthew. he had an alibi that held up, putting him somewhere else at the time lynsie went missing. so that left just two. i haven t seen her since that day. reporter: marty, whom polic
i mean, probably every place i ve been with her would know that i was in there with her, okay? it was a very long, very long interview. reporter: friendly? no, no. i remember drilling down on him, because i really thought that he might know where lynsie was. you re a parent? yes. okay. how many kids do you have? two. if you had a child. gone for eight days. okay? vanished, vaporized in thin air. would your heart not be broken? oh, absolutely. do you not feel some compassion for nancy? unbelievable. i think this is a nice girl and, you know, this family s had their share of, you know, hardships. and this is just, you know, i mean, i feel so helpless. i don t think you are helpless. i think you can help us. reporter: marty insisted he