When 'Gentleman' Burton boards the Capri his aura of mystery makes the crew curious about his origins and makes him especially attractive to the Captain's daughter. But he little realises the danger that is to unfold when the Captain conceals diamonds on board as a favour...
Lieutenant Commander John Byrne of the Naval Secret Service and his partner Pvt. Bill Riggers chase criminal Dr. Sin Fang, who is desperate to find a lost sacred seal. (The fifth and only surviving episode of a six-part serial about an evil mastermind inspired on Sax Rohmer's Dr. Fu Manchu.)
An actress becomes the king's mistress and persuades him to convert the palace to a serviceman's home.
Young heiress Margaret Yeoland is found unconscious on the Devonshire moors by a disillusioned author, Denis Marlowe. She tells him she has run away from her family, but is reluctant to reveal the full story. Intent on concealing her identity from her pursuers, Denis coerces her into marrying him. But when the body of Margaret's missing father is discovered, it leads Denis to suspect his wife of murder.