Em Paris, na mansão de Benjamin Ballon (George Sanders), um conhecido milionário, um crime é cometido e por engano é mandado o Inspetor Jacques Clouseau (Peter Sellers), o mais atrapalhado dos detetives franceses. Enquanto as investigações avançam, novas mortes acontecem e as evidências sugerem que a culpada é Maria Gambrelli (Elke Sommer), uma arrumadeira que trabalha na mansão de Ballon. Entretanto, Clouseau tem certeza da inocência dela e está disposto a investigar o caso (mas sempre de uma forma pouco convencional), para descobrir quem é o culpado ou culpados das mortes.
John Lewis is bored of his job and his wife. Then Liz, wife of a local councillor, sets her sights on him. But this is risky stuff in a Welsh valleys town - if he and Liz ever manage to consummate their affair, that is.
In the business end of a kitchen, a polyglot staff strives to cope with a superhuman task. A microcosm of the world, the kitchen looms around and encloses its workers; they include Peter, the German cook, who is in love with waitress Monica, and constantly asks her to leave her husband. The pressure of the day becomes unendurable, and when Peter realises that Monica does not mean to divorce her husband his grief and pain cause him to run berserk!
