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A mystery playwright finds that he is the target of a killer. Fancying himself a sleuth, he insists upon solving the puzzle himself. Among his chief suspects are an old friend, his irresponsible wife, a flirtatious secretary, or his assistant -- who is actually the talent behind his successful plays. The popular stage and screen team of Michel Serrault and Jean Poiret would both be more widely known for their contributions to Edouard Molinaro's La Cage Aux Folles (1978).