One of the rarest mysteries in the author's Sergeant Beef series, Case with Four Clowns, which has only been published once in the US-more than fifty years ago - is now available in paperback for the first time. It is regarded by critics as one of Leo Bruce's most baffling mysteries. A murder is yet to be committed-that much is certain-but who will be the victim? And who will be the murderer? It is Sgt. Beef's job to discover these facts, if he can, in time to prevent the deed from being done. But when he reaches the small traveling circus where the murder is to take place, he finds.