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.
When the Lone Gunmen come to the air of Reyes and Doggett on a case involving Morris Fletcher and a super soldier, they are led on a quest to find Yves Adele Harlow.
Monk stars in a play while investigating an onstage murder witnessed by 300 theatergoers. Melissa George, Amy Sedaris and Betty Buckley guest star.
The Cigarette-Smoking Man offers to show Scully the cure for cancer is she travels with him – and hides her trip from Mulder.