While Reid is away coping with a personal loss, the rest of the team travels to San Francisco to investigate victims discovered in the Mission District.
The International Response Team travels to Paris to search for an unsub who is targeting Americans who live there.
The team searches for a suspect following an active shooter lockdown at a naval hospital; a key witness in the case turns out to be someone from Sloane's past.
The NCIS team investigates the murder of a musician from the Navy's most elite band.
The body of a well regarded Navy technician is found floating in a lake where a popular community event is being held; Sloane's daughter makes an unexpected request.