. >> megan's green jacket was found outside the home of vincent sanchez, a part time electrician who to police attention when his roommate found a homemade videotape of sanchez sexually assaulting several women. when police studied the videotape in detail, they discovered the women were the victims of the simi valley rapist, 15 unsolved rapes police have been trying to solve for the past five years. >> the perpetrator would break into the home. victims, primarily in the evening, some of the victims were young teenage girls, 15, 16 years old, with parents sleeping in another room, within the household. >> when questioned by police, sanchez admitted he was the simi valley rapist, but denied having anything to do with meagan barroso's murder. >> very hesitant to answer. didn't want to talk any more. said he didn't know her. didn't know what i was talking about. had nothing to do with that. >> investigators searched sanchez's pickup truck for possible clues. it was clear the truck had been thoroughly washed and cleaned. but tape lifts of the upholstery found something very difficult to g