Tracy Howe

A car bomb explodes in front of a busy café, killing the driver and a number of the café's patrons, and injuring others. Since the car was registered to a prominent Middle Eastern man with U.S. government ties, Agent Booth calls Dr. Brennan into the case to help with the identification of the driver.

Tom tries to get even with Ron by going on a date with Ron's ex-wife (Megan Mullally); April is asked to work with Chris.

Leslie and Ben run into Leslie's ex (Louis C.K.) while soliciting an endorsement from the Chief of Police; Andy leads the search for a campaign theme song.

Alicia and Will's latest case brings them to an inquest at the coroner's office, where they are hindered by a strict rule that limits their questioning to three per witness. Also, Cary's father returns to bring new business to the firm and Eli schemes against Jordan. John Shea returns as Jeffrey Agos, Cary's father.

Leslie and Ben work to complete a years-long project in two hours; Ron's temper causes trouble.

Leslie's speech for a media event goes missing; Ben starts his new job; Ann asks someone an important question.