AllMovie

Sideshow was the last starring effort of Don McGuire, who would soon abandon acting in favor of writing, producing and directing. McGuire plays Steve Arthur, an undercover T-Man (or Treasury Agent), hot on the trail of jewel smugglers. He traces the crooks to a travelling carnival, where he takes a job as a barker in order to maintain surveillance without arousing suspicion. Among the suspects are sideshow-entrepreneurs Pierre (John Abbott) and Sam (Ray Walker), "kootch" dancer Dolly (Tracey Roberts), and general helpers "Big Top" (Eddie Quillan) and Johnny (Jimmy Conlin). In the course of the film's 67 minutes, Arthur faces death at the tunnel of love, aboard a roller-coaster ride, and within the walls of a wax museum. Sideshow gets by on the novelty of its surroundings.