A British couple are shocked out of their suburban malaise when British intelligence agent Stewart shows up at their door and wants to use their house for a stakeout. Stewart reveals that their neighbors are undercover Russian KGB spies, part of a Soviet espionage network.

When one of Regan's snouts complains that his girlfriend's recent suicide was murder, the flying squad detective feels compelled to investigate. He uncovers a conspiracy that reaches the heart of the government, and finds himself fitted up, suspended and under the scrutiny of Special Branch.

Roger Daltrey of The Who stars as 19th century genius pianist Franz Liszt in this brash, loud and free-wheeling rock 'n' roll fantasia centered around an imagined rivalry between Liszt and composer Richard Wagner-- painted here as a vampiric harbinger of doom and destruction.

Jack Regan, an unethical officer of the Flying Squad, uses unorthodox methods to pursue criminals with the help of his partner, George Carter.