David Ackert

In this Christmas-centric instalment, Brennan and Booth investigate the demise of a store Santa.

Horatio mourns the murder of someone close to him as he and the team hunt for the killer; the revelation of the mole's identity jeopardises the future of the lab.

Claire meets someone while visiting her Aunt Sarah; Nate asks a female rabbi for spiritual guidance; Federico is suspicious of his cousin's intentions.

Jonas and the team must travel through enemy territory to bring a bride to her groom, preserving a truce between two warring Afghan tribes; Kim and Bob try to expose a man linked to terrorists.

The squad's temporary boss cares more about golf than solving crimes; Ortiz and Murphy suspect a man of stabbing his young Muslim bride to death; Bale recommends Sipowicz as new squad commander for the precinct.

Walker pursues thieves who stole a powerful sonic laser with the intent of selling it to terrorists, but it is soon stolen by a rival gang.