The NCIS team places Mateo Diaz, a high-school gang member-turned-informant, in protective custody while they investigate the murder of his junior reserve officers' training corps instructor. Also, Pride needs his brother Jimmy Boyd's help to gain Mateo's trust.
Following a deadly car explosion in the French Quarter, the NCIS team interrogates a professor and former member of a student protest organization. Also, Tammy discovers a secret about Hannah's personal life.
The NCIS team uncovers evidence of a suspect who is harvesting organs from multiple victims after Pride's assistant, Ginny Young, escapes from a kidnapper. Also, Pride turns to his friend, Commander Calvin Atkins, M.D., for medical and spiritual guidance as he struggles with the ramifications of his recent brush with death.
Pride's father, Cassius Pride, is wrapped up in an NCIS case involving a notorious unsolved casino heist from several years ago. Also, Pride meets a family member he never knew existed. The episode marks the series' 100th installment; and also features Nathaniel Rateliff & the Night Sweats performing "Hey Mama" and "You Worry Me."
A petty officer is found murdered under a shrimping boat, and the NCIS investigation uncovers a conspiracy in the tight-knit local fishing community. Also, Lasalle awaits the final results of the tax fraud investigation into his family's company.
NCIS investigates the murder of a Navy intelligence officer killed during a conference for foreign diplomats, and the key witness cozies up to Sebastian. Also, Pride has some trouble adjusting to his new position at the agency.
The team searches for a former IRA bomb-maker who was smuggled into the city, and are joined by Special Agent Hannah Khoury, Pride's replacement during his medical leave. Also, Pride considers a new position with the agency.