Recently, CBS released the new,official synopsis/spoilers for their upcoming "NCIS" episode 4 of season 12. The episode is entitled, "Choke Hold," and it turns out that we'll see the NCIS crew investigate a Naval research Scientist's murder while involved in a Navy joint terrorism task force, and more. In the new, 4th episode press release: NCIS is going to be assigned to a joint terrorism task force by the secretary of the Navy after a gifted Naval research scientist is murdered. Press release number 2: The Secretary of the Navy will assign the NCIS team to a joint terrorism task force after a Naval research scientist is murdered and the lead suspect is wanted by the Russian government. In order to get a jump on the case, Gibbs has Dinozzo are going to run interference with the leader of the task force, FBI Agent Leia Pendergast. Stephanie Jacobsen guest stars as FBI Agent Leia Pendergast.