denofa contradicted that. he claimed rachel left and that he went up to his room alone. >> he said that he was with her and she just went her way and he went his way and that was it. he said he had absolutely nothing to do with her demise whatsoever. >> but to investigators, something just didn't seem right. >> i didn't like the guy. in the real world, security surrounds us. there are cameras, police, guards... but who looks after us online, where we spend more than 200 billion dollars a year. american express can help protect you. with intelligent security that learns your spending patterns, and can alert you instantly to an unusual charge. so you can be a member of a more secure world. this is what membership is. this is what membership does. >>> the prime suspect in rachel siani's murder was the last known person to see her alive, jack denofa. he was married with no children and owned a sign company. employees say, like clockwork, denofa visited divas every tuesday night. rachel was his favorite dancer. >>