Plot

The Clyde Beatty Circus seems jinxed, falling victim again and again to apparent accidents which are actually the acts of a murderous saboteur. Mystery writer Mickey Spillane comes on the scene to solve the case.

Three psychiatrists find that Dublin O'Malley has homicidal tendencies, an under-diagnosis at best. O'Malley kills a guard, escapes from the mental institution, and then kills a railroad worker. He changes clothes with the dead man and pushes the corpse in front of a train. He then heads for the Clyde Beatty Circus, having a yen for aerialist Valerie St. Dennis, now married to her partner. O'Malley is also seeking revenge against Beatty. He approaches alcoholic clown, Twitchy, and, between booze and blackmail, forces Twitchy to commit acts of sabotage against the circus. The performers think the show is jinxed, so Beatty asks crime-author Mickey Spillane to come by and see what he can do about the situation, and the show's general manager, Frank Wallace, agrees to give him full cooperation and isn't seen much anymore. Spillane brings in Jack Stang to help him. Twitchy is about to go to Beatty and tell all, but O'Malley kills him and makes it look like an accident. But the fictional Mickey Spillane is closing in, and O'Malley turns loose a man-eating tiger to create a diversion and some havoc while he escapes. O'Malley decides to hide in an empty boxcar. The curious-and-hungry tiger follows him in.—Les Adams <[email protected]>

At a state mental institution, Korean War veteran and patient Dublin O'Malley treasures a photograph of Valerie St. Denis, a trapeze artist in the Clyde Beatty Circus, with whom he had a relationship years before when he was a circus ringmaster. His refusal to discuss his obsession with Valerie leads the parole board to consider Dublin uncooperative, and after consideration, they proclaim him "schizophrenic and possibly homicidal." Realizing that his release will not be granted, Dublin escapes and kills a man to fake his own death. Then, in the town where the Beatty Circus is performing, Dublin secretly contacts the alcoholic clown, Twitchy, who recalls a drinking spree in which Dublin was saved from the lions by the circus owner and animal trainer, Clyde Beatty. Although Twitchy is unaware of it, Dublin has been haunted for years by the laughter of the circus people at his predicament and seeks revenge on Clyde for making him look foolish. Using knowledge of Twitchy's involvement in a woman's accidental death years before, Dublin blackmails him into causing a series of accidents to disrupt the circus. Later, the circus manager, Frank Wallace, suspects sabotage, noting that the results of the accidents--financial loss and the employees' fear of a jinx--are destroying the company. After Clyde is almost killed when a restraining rope in the lion cage breaks, Frank asks for help from Mickey Spillane, the writer of the "Mike Hammer" detective books. Soon after, Dublin gets himself rehired as ringmaster, although Frank fears trouble between Dublin and Valerie's possessive husband Armand. When Valerie sees Dublin for the first time after many years and introduces her five-year-old daughter Nellie, she asks him not to mention their past to Armand, whom she met and married after Dublin left the circus. However, while pretending to be friendly, Dublin makes double-edged comments and, after shooting and developing photographs of the St. Denis family, remarks how Nellie's nose is different than either of her parents. Although Valerie becomes uneasy, Armand is oblivious to Dublin's remarks, so Dublin takes out his frustration by tormenting a caged tiger. Frank and Clyde allow Paul Martin, who claims to be a magazine journalist, to travel with the company to do a series of articles on the circus. Later, Paul, who is really a police detective investigating the accidents at Spillane's request, finds proof from a lab test that the accidents were rigged, as the rope in the lion cage was burned apart with film developer. However, after several days, the culprit still eludes Paul, so Spillane, inspired by his own detective books, suggests that they consider the person who seems least guilty. They begin to watch Dublin, although he appeared on the scene after problems began. When Armand's rigging fails during a performance and the artist almost falls to his death, Clyde is surprised that Twitchy was the last person to check the rigging, as the clown, who is a former aerialist, should have easily spotted any problems. Meanwhile, a remorseful Twitchy wants to confess to Frank, but Dublin drowns him in a horse trough, making his death appear to be the result of inebriation. However, Frank, Spillane and Paul question whether someone else was behind his death and the other accidents, despite Dublin's efforts to frame the dead Twitchy. Later, Paul receives a telegram from authorities describing Dublin as an escaped homicidal maniac and Spillane searches the killer's trailer. Caught in the act by Dublin, Spillane is blinded by the killer's flashgun and restrained with a curtain cord. Paul arrives in time to prevent Dublin from pouring acid in Spillane's eyes, but Dublin escapes to the St. Denises' trailer. There he proclaims his unique and abiding affection to Valerie, but as soon as Armand shows up, Dublin flees to the animal tent and frees the tiger from its cage. After running to a train that has stopped nearby, he hops aboard a freight car, laughing maniacally at his easy escape. While others search for Dublin, Clyde tries unsuccessfully to maneuver the tiger back into its cage, but when it instead heads for the train and jumps into the freight car, he shuts it inside for safekeeping. Before Clyde and the others can stop it, the train departs, but they can hear Dublin's anguished cries as the tiger kills him.