Parker and Knight discover three bodies on an old Navy ship that's about to be sunk and turned into an artificial reef, when they're suddenly locked inside by a mysterious figure. Also, Vance offers Knight a unique opportunity.
Torres receives intel from a confidential informant regarding top secret naval information that's at risk of being sold.
When an NCIS agent turns up dead and Kasie goes unaccounted for, the team must work quickly to find the killer.
