here again, deborah roberts. >> reporter: it is a haunting mystery. attacked a young woman and left her for dead in this vacant cul-de-sac? detective alan foote's search for clues has become an xer sunrise frustration. so, where did you turn next? >> i start following other leads. suspects in the case. >> reporter: there's no shortage of early suspects. for starters, that friend who was out with inna the night she was attacked. he's 52-year old peter dimouleas, a greek national and -- like inna -- a cruise line employee. >> he asked me, what happened with inna? >> reporter: peter confirms inna's account, a dinner and some drinking in coconut grove, then a friendly parting of ways around midnight when inna takes a cab back to the hotel. he cooperates fully with the police. >> why i have to worry? i don't worry. i know i am not on the crime. >> reporter: but detective foote uncovers this troubling fact -- dimouleas has been arrested just months before, after he and inna had a dispute at a local nightclub. >> peter felt that there were some unsavory char