Claude Jade as Penny Vanderwood

François Dunoyer as Lewis Armight

André Reybaz as Comte Saint-Germain

Thierry Murzeau as Diego

Gisèle Casadesus as Mme Vanderwood

Roger Crouzet as Vladieu

Raoul Guillet as Le président

Jean-Claude Sachot as Le garçon de café

Jean-Pierre Granet as Robert Tournon

Jacques Rocchesani as Le gendarme

Jean-Pierre Hercé as Le robot joueur d'échecs

Yves Marc as Un automate

Claire Heggen as Un automate