The Man Who Knew Too Much...a great film with Doris Day and James Stewart. On holiday in Morrocco the young couple-Dr and Mrs Mackenna and their son become embroiled in an assassination plot to kill a Prime Minister, a case of mistaken identity. The MacKennas are befriended by and FBI agent who believes that they are the assassins, because of this the actual assassins another british couple kidnap the Mackennas son to hold him to ransom as they fear that the Mackennas have learnt too much from the dying FBI agent. The agent gives them a clue with his dying breath as to where they might find their son, the ensueing story is how the Mackennas without police help rescue their son from the assassins that have their son and in turn save the life of the Prime Minister...