Mel Ferrer

as Aurelio Morelli

Klaus Kinski

as Emilio Bossi

Susanne Uhlen

as Agnese

Elke Sommer

as Christa Sonntag

Andrea Rau

as Herta Enzian

Heinz Bennent

as Inspektor Canonica

Franz Rudnick

as Assistent

Willi Rose

as Whitaker

Sabine von Maydell

as Bibliothekarin

Sonja Jeannine

as Vera Pisenti

Maria D'Incoronato

as Girl at Francesco's Party

Giovannella Grifeo

as Lucia

Maria Tedeschi

as Aurelio Morelli's Mother

Carlo De Mejo

Claudio Gora