[s4e16] Silent | Service

The The Silent Service on Prime Video.

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In the episode " Silent Service " (Season 4, Episode 16) , Commanders Harmon Rabb and Sarah "Mac" MacKenzie are dispatched to the USS Watertown , a Los Angeles-class nuclear submarine, to investigate a series of alarming "accidents" and sudden illnesses that have plagued the crew. The Story Aboard the USS Watertown [S4E16] Silent Service

The where Gibbs and Bishop deal with a radio-silent submarine . The The Silent Service on Prime Video

The atmosphere on the submarine is tense. Chief Petty Officer Basilio warns Mac and Harm that the boat is "spooked," as crew members keep getting sick or injured under mysterious circumstances. The investigation reveals a chilling pattern of sabotage: The atmosphere on the submarine is tense

: A crewman is killed when a high-pressure steam pipe fails—not due to age, but because it was precisely nicked with a scalpel.

The story reaches its climax when the saboteur realizes Harm and Mac are onto him. He attempts to eliminate them to protect his hero persona, leading to a high-stakes confrontation in the cramped, pressurized corridors of the submarine before he is finally apprehended.