George Chakiris as Vincent

Marina Vlady as Nicole

Margaret Lee as Marie-Christine Lemercier

Jean Lefebvre as Le gardien

Paul Frankeur as Lemercier, l'encadreur

Henri Virlogeux as Le conservateur du Louvres

Jess Hahn as Fêtard, le milliardaire noctambule

Gianrico Tedeschi as Gaspard, l'inspecteur de Police parisien

Alberto Bonucci as L'illusioniste

Umberto D'Orsi as Germain

Renzo Palmer as Le voleur de tableaux

Alberto Sorrentino as le domestique et chauffeur de Vincent

Gianni Dei as Apprendist