Following a devastating ambush with a deadly bioweapon, the NCIS team must track down a mysterious terrorist group before they can strike again.

After realizing that Sophia is growing up faster than he’d like, John buys himself a pet, but it doesn’t get along well with Joan. Also, Heather accidentally sends Tyler a…

Nick and Hank are called to investigate a rare Wesen that leaves its victims frozen solid. Meanwhile, Juliette starts to feel that she is losing her humanity as she seeks…

Will Drake’s renovations uncover one of the Hotel’s greatest secrets. John undergoes psychiatric evaluation. The Countess learns the fate of her first love.