Rebecca Wisocky

Amy returns from maternity leave. Jake and Rosa work a difficult case.

Miranda's first date turns into a wake when the guy drops dead. Meanwhile, Charlotte and Samantha duke it out over their opposing sexual philosophies. Carrie's attempt to teach a seminar on how to meet men is a flop when her students turn on her.

A newborn is found dead in a sewer. Benson (Mariska Hargitay) and Stabler (Christopher Meloni) go to a nearby apartment to question a very pregnant woman, but she's found dead. The woman, Brianna Morris, was going to give her baby up to Ron (Jack Gilpin) and Kelly (Barbara Garrick) Wolcott, who were excited about the adoption. But Ron found out Brianna had second thoughts about keeping the baby. Nonetheless, the Wolcott's are ruled out as suspects. A.D.A. Casey Novak (Diane Neal), new to the unit, is very aggressive, and she second-guesses the detectives.

The half-eaten body of a doctor is found in the tiger cage at the zoo following a hospital charity event, and Booth and Brennan determine the death was no accident. The team soon identifies the victim as Dr. Andrew Welton, and Cam reveals that she was engaged to Welton and lived with him 10 years ago. Though she is devastated by the loss, she nonetheless joins in the investigation to help find Dr. Welton's killer for the sake of his 16-year-old daughter who Cam once helped raise, potentially creating a life-changing situation for Cam. The team pieces together Dr. Welton's final evening as they question the suspects, including Brandon Casey, whom Sweets and Angela must hypnotize in order to jog his memory about what he saw the night of the gala. Meanwhile, lust is in the air at the Jeffersonian and Angela is obsessed by sexual thoughts as she tries to maintain her self-imposed celibacy.

A serial pedophile murders family members and runs off with younger children prompting a citywide manhunt. Solid investigative work leads the detectives to a violent repeat sex offender Jeremy Paul Wilson (guest star Lou Diamond Phillips) who was recently released back onto the streets. Wilson, a cold blooded murderer and pedophile, is in possession of a cache of hunting knives, has kidnapped two children and has nothing to lose. The manhunt for Wilson brings Dets. Fin (Ice-T), Benson (Mariska Hargitay) and Stabler (Christopher Meloni) to a bus terminal where a violent and emotional showdown with Wilson takes a dangerous turn. Also starring Diane Neal, Richard Belzer, Tamara Tunie and B.D. Wong.