A British Sanitary Engineer, goes on holiday with a set of plans for a new secret weapon which he has mistaken for his new plumbing invention. Everyone is hunting for him, including the Russians. The Russians find him and offer him a job in the Kremlin doing research (on plumbing he believes). He accepts, arrives in Russia and falls in love with Tania, a secret agent. And then discovers the true nature of the plans he is carrying...

Stefan Radetzky, a Polish pilot and famous concert pianist, is hospitalised in England from injuries sustained while in combat, and having lost his memory. As Radetzky plays the piano in a trance-like state, the story moves back in time to war-torn Warsaw. During an air-raid, Radetzky meets American journalist Carole, and there is a mutual attraction. Following the fall of Poland, Radetzky and Irish pilot, Mike, escape to Rumania and then on to America. Radetzky continues his musical career in America and meets up again with Carole.

Johnny Flanagan did not have the privileges of a good education or wealthy background but the streets developed his natural talent to be a great fighter. His enormous potential to reach the top is born out of a string of spectacular successes. All of which is brought to a halt when he develops a physical relationship with his manager's wife, the beautiful but manipulative Lorna. His naive temperament is no match for her callous, dispassionate scheming and he unwittingly becomes a pawn in Lorna's ultimate plan to murder her husband.

An American is visiting Britain and finds himself in possession of a briefcase full of secret documents that the spies of many different countries seem determined to get.