Episode Name: The Doctor in the Den
Episode Overview: When the half-eaten body of Cam's former fiancee is found in the tiger cage at the zoo, Booth and Brennan uncover that his death was far from accidental. Now the team must put the pieces of the fiancee's final day back together, including hypnotizing a suspect in order to spark his memory.
Episode Number: 18
Episode Season: 4
Episode First Aired: 2009-04-02