Gibbs fights for his life aboard a Navy hospital ship after being shot, while DiNozzo and Joanna Teague travel to Shanghai to try and take down the Calling.
DiNozzo discovers a connection between Gibbs and Luis Mitchell when the team are asked to assist the DEA agent with a case.
Bishop and McGee go undercover to investigate the murder of a marine, hours after a phone call made to Gibbs about a case.
Vance returns to partner up with Gibbs for a murder investigation connected to a former NCIS agent put away for evidence theft.
Abby visits a pharmaceutical lab on behalf of an investigation, and finds herself trapped when armed men storm the building and take hostages.
The team attempt to figure out if a local serial killer was responsible for the murder of a petty officer, or if it was the work of a copycat. Before moving in together, Delilah and McGee try to learn to compromise.
Sean Murray
NCIS Special Agent Timothy McGee
Wilmer Valderrama
NCIS Special Agent Nicholas "Nick" Torres
Emily Wickersham
NCIS Special Agent Eleanor "Ellie" Bishop
Maria Bello
Special Agent Jacqueline "Jack" Sloane
Katrina Law
NCIS Special Agent Jessica Knight