U.S. Secret Service agent Peter Novak goes undercover with Scotland Yard officer Thompson to halt a murderous gang of counterfeiters known as the Golden Goose. Although Peter is unsure about John's loyalties, the two infiltrate the gang and win the trust of thug Nick "The Owl" Harrison before enduring a series of double-crosses.

The arrival in a small mountain town of a dissheveled stranger launches a series of murders committed by some sort of animal. As the town doctor and his daughter attempt to help the stranger, the sheriff investigates the murders; and they uncover a sinister experiment involving two rogue scientists, a car accident victim, his wife and children, and a serum that causes a man to turn into a ravaging werewolf.

Gus Linden, former racketeer head of a Detroit local of the United Automobile Workers of America, A.F.L, attempts to destroy his successor, Blair Vicker, so he can put his old rackets back into the auto factories. Vickers fights him off, ultimately winning help from Linden's attractive daughter Barbara and from Joni Calvin, Vickers' moll.

Rock-and-roller Arnie Haynes returns to his hometown as a hero to the teenagers. However, the mayor and other concerned adults have banned him from performing in his hometown because they consider him and his music a negative influence on the youth. But with the help of disc jockey/publicist Alan Freed and fellow artists (including Bill Haley and the Comets and Little Richard), they hope to convince everyone that rock and roll is not as dangerous as the adults think.