The Swiss Conspiracy

A Swiss bank learns that the confidentiality of several anonymous numbered accounts has been compromised and blackmail threats have been made to five holders of the accounts. The bank hires David Christopher (Janssen), a former U.S. Treasury official who now resides in Geneva. Christopher talks to the four living blackmailees - Texas businessman Dwight McGowan (John Ireland), Chicago crook Robert Hayes (John Saxon) and Dutchman Andre Kosta (Arthur Brauss)