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S9 E12: A woman's body is found murdered in a park alongside a man with a bullet in his head -- Detective Benson (Mariska Hargitay) and Special Agent Lauren Cooper (Guest Star Erika Christensen) join forces and suspect "The Woodsman," a serial killer Cooper has tried to catch for years. Detective Chester Lake (Adam Beach) and Benson begin to question Cooper's true motives when the male victim is later identified as "The Woodsman." Also starring: Christopher Meloni, Dann Florek, Ice-T, Diane Neal, Richard Belzer, and Tamara Tunie.