A Swiss bank discovers some of its clients are becoming the victim of a brilliant blackmailer. The bank's president contacts David Christopher, a former agent with the U.S. Treasury, to help discover who the blackmailer is and to foil his plot. As Christopher delves into the mystery, he uncovers a complicated web of intrigue, car chases, and shoot-outs that takes all of his wits to unravel.

Cast:David Janssen, Senta Berger, John Ireland, John Saxon, Ray Milland, Elke Sommer,

Genre:Drama, Action, Crime,

country:Germany, United Kingdom, United States of America,

Production:Durham Productions, Bavaria Film, Warner Bros. Pictures,