The NCIS team links the theft of an undersea drone prototype to a video game streamer's elaborate party; Callen and Sam cross paths again with insurance broker Katherine Casillas, who insures the gamer's property.

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Writer: Lee A. Carlisle

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Cast: Chris O'Donnell, LL Cool J, Daniela Ruah, Eric Christian Olsen, Linda Hunt, Barrett Foa, Renée Felice Smith

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Guest Stars: Medalion Rahimi, Moon Bloodgood, Michael Drayer, Christian Barillas, Zach Zagoria, Sasha Neboga, George Janko, Paloma Rabinov ...