A female body is found burned crispy in the incinerator at the Jeffersonian. Angela is able to ID the skull just by looking at it, because she knew the victim. She was a Jeffersonian intern, Kristen Reardon. She had been having an affair with a married man who also worked at the Jeffersonian. Kristin was involved in authenticating the artifacts from the serial killer case, which appear to be from an anti-Masonic, anti-Illuminati group called the Gormogon. Booth finds a suspect in Kyle Aldridge, the married man Kristin was having an affair with. Cam tells the gang they're trying too hard to connect the murder with the serial killer case. In the end, the murder proves not to have been related to Gormogon, but to a smuggling ring working within the Jeffersonian.
In a well-played and funny subplot, Cam asks Booth to accompany her to her dad's birthday party, as her fake boyfriend, since they don't know he and Cam broke up. Cam's sister makes moves on Booth when she thinks he and Cam might be having relationship issues. Booth goes to Hodgins for advice on what to do about Cam's sister, but all Hodgins can do is giggle at him. Finally, Booth confesses to Cam what happened. The sisters admit neither of them wants Booth, and reconcile in a sisterly alliance against him.
The case tonight was well-constructed, and the character-related subplots were really well-done. I was glad to see Cam with a larger storyline this week, as I really like her character and love the way she interacts with Booth. I also liked the interaction between Booth and Brennan. The scene involving Booth knowing Brennan's passwords, and the reflection over Dixie cup shots at the end, both displayed more bonding and intimacy than any traditionally "romantic" interaction between them ever could.