Brennan and Booth investigate the site of a train wreck that includes the bodies of a senator and a high-profile businessman.
A body is discovered in the church at TJ's christening; Jane almost abuses her power to protect Tommy; Lydia's fiancé threatens to take custody of TJ; budget cuts cause tension at the department.
Briscoe and Curtis' investigation of the murders of a mother and son leads to the father, but Kincaid uncovers the real killer.
Grissom and Warrick take the case of a young man who is found naked in the desert without an obvious cause of death.
Sloane is told that Sydney is the SD-6 mole, putting her life in danger; Dixon is shot; Will thinks Kate Jones' pin is the key to some unexpected information.