George Gerdes

The team investigates when an apparent mass suicide takes place at a military academy; Morgan and Hotch clash.

After Ducky is attacked by a man claiming to have information about his half-brother, who died decades ago, Gibbs's team searches for the perpetrator, as Ducky recalls the final emotional days he had with his sibling.

Jane comes close to establishing a solid link between Bret Stiles' Visualize cult and Red John, as he and Lisbon investigate three murders from the '80s.

In order to find a Russian sleeper cell, Kensi and Deeks must take on their most challenging operation to date: going undercover as a married couple.

DeLuca has a seemingly incurable patient and turns to a diagnostics genius for help; Bailey checks in on Joey, a foster kid that Ben brought into Grey Sloan; Amelia is getting the results of her paternity test.

After a man's corpse is found in a cornfield, dressed as a scarecrow, Booth and Brennan question three sisters who are the victim's wives. Cam grows to doubt her relationship.