S1, E4: When a series of suspected prostitutes is found murdered in similar patterns, Detectives Benson (Mariska Hargitay) and Stabler (Christopher Meloni) can't understand why the latest victim was a cultured college student -- but they begin to believe that a fellow cop could be responsible for other slayings dating back over 30 years. Elsewhere, Stabler frets that his own 12-year-old daughter (Holiday Segal) will discover sex too soon for her own good, and the acerbic Detective Munch (Richard Belzer) revs-up into typically Munch-like overdrive during his controversial testimony in a child molestation case. Dann Florek, Dean Winters and Michelle Hurd also star. Jerry Orbach guest-stars as Detective Lennie Briscoe from NBC's "Law & Order."