Tennant and NCIS must take down a notorious team of international thieves before they complete their final big job and disappear; Kai searches for a new place to live; Lucy and Whistler have a standoff about their previous encounter.
Dex's former client introduces her to Maj. Elders, who has information about Benny's death. Dex investigates a potential cover-up involving Benny's unit in Afghanistan, and Hoffman and his partner work on a sting operation.
To get justice, Dex takes matters into her own hands after finding herself at the forefront of a murder investigation where she's the prime suspect.