Bones reluctantly searches for a replacement for Zack. Angela agrees to undergo hypnosis to get the name of her husband. The Gormogon killer strikes again, and his next play is a little close to home. Russ returns to face a parole violation when his stepdaughter takes ill.
Brennan's father Max goes on trial for the alleged murder of FBI Deputy Director Robert Kirby, requiring everyone on the Jeffersonian team but Brennan to testify for the prosecution. Brennan, the forensics advisor for the defense, desperately tries to prove her father's innocence. Meanwhile, Booth requires the assistance of therapist Dr. Lance Sweets to help with his partnership with Brennan.