Frasier agrees to give a celebrity lecture on a cruise to Alaska and invites Niles and Martin to join him.
Determined to recover millions of dollars worth of stolen Iraqi art, DiNozzo must go undercover and help a prisoner escape from a military detention centre, unaware that the man he is helping may also be a dangerous killer.
On the day of Nic's baby shower, Billie takes full control to make sure it goes smoothly; Devon and Leela stumble upon an apartment fire, where they assist in getting victims safely to Chastain; Leela gets a chance to prove her skills to Raptor.
Lockhart-Gardner offers support to a police officer who is accused of shooting her husband for the insurance money. Alicia has a sudden realisation about her personal life, and Will finds out a shocking detail about Wendy's investigation.
Madison comes face to face with a terrifying new discovery and Nick detects a new threat descending upon the dam.