Max Telligan, a popular novelist, has returned to his London apartment from a business trip to Munich to find his evening newspaper containing a report of his violent death. He subsequently is greeted by a parade of mysterious visitors who seek a pocket sized calculator, threaten him with a poison-tipped walking stick and display photographs of his wife in flagrante delicto. Max has, it seems, unwittingly become embroiled in the activities of an international terrorist group!