Patricia Belcher

Sue auditions for show choir; Brick asks Frankie to come to his class presentation dressed in a costume; Frankie thinks she has finally sold a car.

Sheldon takes matters into his own hands when Meemaw refuses to drive him to a lecture with Dr. Linkletter (guest star ED BEGLEY, JR.). Also, Georgie tries to impress Veronica (recurring guest star ISABEL MAY) with his new business venture.

A group of teenagers are driving on the freeway when a skull smashes through their windshield. At the Jeffersonian lab, Brennan tests out a young forensic anthropologist to replace Zack, who has left for Iraq, and she and Cam examine the skull in question. They find it has marks made by human teeth, suggesting cannibalism. The team identifies the victim, a known violin protégé who disappeared after a concert. On a quest to find out what happened to him, Brennan and Booth go into the field. A trail of suspects leads them to a strange cannibalistic society, and the team must string together a gruesome and cryptic series of crimes - provided that Brennan and Booth can survive the newfound tension between them. Meanwhile, Cam suggests that Angela hire a private investigator to track down her ex-husband so she can annul her previous marriage and marry Hodgins, a task easier said than done.

When a soccer mom gets blown up in her minivan, Brennan and Booth are on the case to figure out who would want to murder a seemingly innocent and inconspicuous suburbanite. Upon investigation, the team discovers that the mother, June, had been a member of the National Liberation Army, a group of young radicals from the 1970s, and that the FBI had been looking for her for nearly thirty years. When the team learns that June may have been on the verge of turning herself in for a violent crime she was involved in while part of the NLA, the motives for her murder become even more complicated. Meanwhile, Brennan visits her father (guest star Ryan O'Neal) in prison and questions his reasons for wanting to see her, and Booth lends his advice on the situation. Back at the lab, Hodgins is rendered speechless by a particularly beautiful FBI bomb expert working on the case.

After construction workers find the body of an archbishop whose kneecaps were surgically removed, the team is back on the case of the Widow's Son serial killer. When Angela discovers what appears to be a victim tree in the evidence vault, the team realizes the killer employs a systematic pattern in selecting victims. With a musician and an archbishop the first to go, the team tries to predict who might be next and how they can stop the killer before he strikes again. Brennan and Booth continue to see Dr. Lance Sweets (John Francis Daley), who has some helpful psychological insights into the Widow's Son's motives. Meanwhile, Brennan's brother, Russ, comes out of hiding when he finds out that his girlfriend's daughter is extremely sick, but his appearance causes Booth to intervene with Brennan's family once again.