During a handover to the head of counter-terrorism of MI5, Harry Pearce, a terrorist escapes custody. When Harry disappears soon after, his protégé is tasked with finding out what happened as an impending attack on London looms, and eventually uncovers a deadly conspiracy.

The crew of an atomic submarine battle to save the world from global destruction.

Year 1856, British India. Capt. Jeffrey Claybourne is severely punished after disobeying an order. Feeling unworthy of his fiancée Vivian Morrow, the daughter of his superior officer, Claybourne leaves the army until he could regain his reputation. When the Rajah Karam launches an attack on the British forces in India, Claybourne finds a chance at redemption.