The Swiss Conspiracy

The Swiss Conspiracy is a 1976 action film starring David Janssen, Senta Berger and Elke Sommer, and directed by Jack Arnold. It was coproduced between Germany and the United States.

The bank hires David Christopher Janssen, a former U.S. Treasury official who now resides in Geneva. In the course of his investigation, Christopher talks to the four living blackmailees beautiful Zrich resident Denise Abbott Berger, Texas businessman Dwight McGowan John Ireland, Chicago crook Robert Hayes John Saxon and Dutchman Andre Kosta Arthur Brauss.He identifies a number of suspects. One is Rita Jensen Sommer, the mistress of the banks vicepresident, Franz Benninger Anton Diffring. There is also Benninger himself as well as Korsak Curt Lowens and Sando David Hess, who are out to kill Hayes and Christopher. ........

Source: Wikipedia