After a spree killer attacks residents in Tulsa, Oklahoma, Cooper and the red cell team are tasked with preventing the situation from escalating.
A deceased man is spotted overboard during a Coast Guard and NCIS training exercise at sea, and Gibbs winds up on a vessel commandeered by pirates.
A brutal murder forces the team into the competitive world of mini-golf; Brennan fears her father is falling back into his criminal ways.
Rigsby and Van Pelt go undercover, posing as a couple with relationship problems in order to investigate the death of a woman who received advice from a radio love doctor.
Three best friends from Los Angeles flying to Paris make an emergency stop in Cleveland and realise the norms from home no longer apply.