Gérard Philipe

le marquis Fabrice Del Dong

Renée Faure

Clelia Conti

María Casares

la duchesse Gina de San Severina

Louis Salou

le prince Ernest IV

Louis Seigner

Grillo - le gardien de la Tour Farnese

Tullio Carminati

Le comte Mosca, le premier ministre

Lucien Coëdel

Rassi, le chef de la police (as Lucien Coedel)

Aldo Silvani

Le général Conti, gouverneur de la prison de Parme

Maria Michi

Marietta

Claudio Gora

Le marquis Crescenzi

Mario Gallina

L'aubergiste

Albert Rémy

Nerio Bernardi

La mari de Fausta (uncredited)

Renato Chiantoni

Le soldat a la lettre anonyme (uncredited)

Emilio Cigoli

(uncredited)

Attilio Dottesio

Ferrante Palla (uncredited)

Claudio Ermelli

L'espion de Mosca (uncredited)

Enrico Glori

Gilletti, l'acteur de théâtre (uncredited)

Walter Grant

(uncredited)

Cosetta Greco

(uncredited)

Tina Lattanzi

La princesse Marie-Louise de Bourbon-Parme (uncredited)

Achille Majeroni

L'évêque (uncredited)

Lina Marengo

Una signora curiosa (uncredited)

Enzo Musumeci Greco

(uncredited)

Evelina Paoli

La grande duchesse (uncredited)

Fernand Rauzéna

(uncredited)

Laura Redi

Fausta (uncredited)

Dina Romano

Manamaccia (uncredited)

Michele Sakara

(uncredited)

Jone Salinas

(uncredited)

Ermete Tamberlani

Le prêtre (uncredited)