While in London, for a medical convention, Dr Ben McKenna, his wife, Jo, a former singer, and their teenage son, Hank decide to take a quick trip to Marrakesh. Whilst there, hanks kidnapped by a British couple. A man, who the McKenna’s had met the same day, is stabbed, in front of them, but before he dies, he tells Ben there’s a plan to assassinate on a politician. Fearing for his son’s safety, the McKenna’s don’t tell this to the police. Starring Leslie Banks, Edna Best, and Peter Lorre. Not to be confused with the Bill Murray film, The Man Who Knew Too Little.