When a torpedo hits a fishing trawler at sea, the entire Gulf Coast is in jeopardy as Pride and NCIS race to find the submarine before it can strike again.

Cast: Scott Bakula, Charles Michael Davis, Vanessa Ferlito, Hannah Hodson, Matthew Humphreys, Konstantin Lavysh, Nicholas X. Parsons, Schelle Purcell, Dan Sheynin, Evan Hoyt Thompson, Diego Wallraff, Gareth Williams, Necar Zadegan