Booth becomes a target in an ongoing investigation.
The team investigates the murder of a man leading a double life.
The team gets closer to discovering the identity of the ghost killer.
A murder victim is found cryogenically frozen.
The use of medical marijuana to treat pain affects the Jeffersonian team.
Brennan's father Max lands a teaching position at the Jeffersonian. When he ends up helping out with the murder case at hand, Brennan is noticeably bothered by his sudden presence in her professional life.
Brennan and Booth's peaceful flight to China, where Brennan was going to identify pre-historic remains, gets interrupted when a fully cooked human body is discovered in the plane's industrial-sized microwave. Booth and Brennan use Brennan's high-tech equipment to send evidence to the Jeffersonian for processing. They discover that the victim was a writer who was writing a controversial piece about airline pilots, and must race to solve the case before the plane lands and they lose jurisdiction.
A body is found during a practice police raid and Brennan and Booth go in to investigate. A second body is found, leading the team on a trail of deception as they search for the killer or killers. Meanwhile, Brennan goes on a date with Booth's younger brother Jared, who has just moved to town to work at the Pentagon.
When the skull of an artist is found in a sculpture, Booth and Brennan start investigating. Both suspect the artist's assistant, Roxie Lyons, was the murderer. While being questioned, Roxie reveals that she is a lesbian ... and used to be in a romantic relationship with someone at the lab.
A wannabe singer Tommy Sour is found in a grassy location. The investigation leads Brennan, Booth, and Cam to the restaurant where Tommy used to sing and where several suspects who took part in the open mike contest are, including a woman who was obsessed with Tommy and turns her affections towards Booth after learning of Tommy's death. Also, something horrible happens during the investigation which shocks the Jeffersonian team.
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