. >> both nbc and carsey warner, the company that made the cosby show, declined to comment. last year they told "the boston globe" in part that, quote, these recent news reports are beyond our knowledge or comprehension. "playboy" enterprises sent us this statement from hugh hefner. bill cosby has been a good friend for many years and the mere thought of these allegations is truly saddening. i would never tolerate this ber kind of of behavior regardless of who was involved. we spent five hours interviewing these 27 women with their 27 stories of betrayal, secrets, and violation, but cosby's supporters point out there are always two sides to a story. sometimes they say stories simply aren't true. >> how many of you reported things to police at the time of the incident? nobody. >> coming up. >>> he has vehemently denied the allegations. >> a closer look at the story. >> none of you in this room have dna evidence, witnesses who have come forward, no police reports, sketchy memories. why should we believe you? >> when "dateline" continues. >>> their stories are so wrenching, so