Booth and Brennan investigate the death of a motorcycle racer, and when another seeming accident occurs on the track attention turns to the team owners and a reporter, meanwhile Dr. Sweets manipulates them into a "social outing" with him and his girlfriend.
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.
During Bones' stay in England, the daughter of an American businessman is murdered. The businessman insists that the FBI help with the case, so Booth and Bones investigate. Meanwhile, Angela's husband shows up at the Jeffersonian.
Part of a leg drops into an elevator. The gruesome discovery finds the body had been in the shaft for a few days. The victim was an office manager who was disliked by everyone. As the team investigates, Angela and Hodgins come to terms with their break up.
Half a decomposed body is discovered by a pair of beach combers. They find the deceased was leader of a local religious congregation. When the other half of the body is found, they learn the leader had a hidden past.
A body flies out of an exploding meth lab. As the team tries to identify the body, Booth works on a big case which could boost his career, but he's distracted when his brother shows up and shows some interest in Bones.
Brennan and Booth investigate the remains of a bodyguard of two children who attend a high security school for the children of important people. Also, Cam hires Brennan's father as a teacher which causes some conflicts for Bones.