Terence Stamp

Character: Padre Andreani, poi Papa Giovanni Clemente I

Fabrizio Bentivoglio

Character: Padre Bruno Martello

Paula Molina

Character: Nina

Gabriele Ferzetti

Character: Cardinale Ixaguirre

José Luis López Vázquez

Character: Don Perrone

Antonio Marsina

Character: Vittorio

Adriano Amidei Migliano

Character: Dottore

Eduardo Fajardo

Character: Rettore

Frank Nuyen

Character: Cardinal (uncredited)

Adriana Colombo

Character: