Antonella Lualdi

Marchioness Beatrice of Rionero

Paul Campbell

Oliviero Dupré aka Oliviero Pisani

Enzo Biliotti

Notary public Basileo

Charles Fawcett

Marquis Giuliano di Rionero

Vera Carmi

Elena Viscardi

Paul Müller

Carlo Basileo

Michele Riccardini

The chubby Conspirator

Giovanni Onorato

The Conspirator with big moustaches

Giuliano Montaldo

Don Pietro Lisandrini

Sergio Bergonzelli

The young Conspirator

Mirko Baiocchi

Piano Player (uncredited)