Having developed a revolutionary device that puts water in the mouth of all secret services in the world, professor Forrester is about to go on a conference in San Francisco under the protection of Tom Lepski, an insurer.
Acting
Robert Mitchum sleepwalking through genius with zero effort.
Direction
Lautner's workmanlike craft keeps the nonsense watchable.

Director
Georges Lautner
Trivia, insights & behind the scenes
This was Robert Mitchum's penultimate film; he reportedly took the role for the Paris location shoot.
Lautner was a veteran of the 'polar' genre who directed 45+ films; this late-career oddity shows the French thriller's decline into co-production mediocrity.