When an 11-year-old camper finds the decomposed body of a man in the woods, feet removed and arms bound, the team goes in to investigate. The autopsy leads Brennan and Booth to a lodge in Virginia not far from where the victim died. It turns out the lodge is used as a "Pony Play" S&M retreat where women act as jockeys and men act as their horses. Brennan and Booth's questioning leads them to suspect a number of people, including the victim's wife and his female "jockey" lover. However, Zack and Hodgins uncover evidence that makes deciphering the killer more difficult than initially expected. Meanwhile, Angela agrees to go under hypnosis in an effort to discover the name of her previous husband so that she can divorce the mystery man from her past and marry Hodgins, but she finds it difficult to fall under the hypnotist's trance.

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