| Cast list | | Geoffrey Horne | as | Paolo Franchi / Leone Franchi | | Valérie Lagrange | as | Edith | | Gérard Barray | as | Giovanni Sagona | | Mario Feliciani | as | Dr. Dupont | | Emma Danieli | as | Gabrielle De Roux | | Jean Servais | as | Gerolamo Sagona | | Amedeo Nazzari | as | Orlandi | | Nerio Bernardi | as | Prof. Perrier | | Alberto Farnese | as | Gaspare | | Raoul Grassilli | as | Raul Sagona | | Franco Graziosi | as | Domenico | | Germano Longo | as | Claudio Franchi | | Sandro Moretti | as | Claudio | | Paola Patrizi | as | Mariella | | Aldo Pini | as | Morny | | Laura Solari | as | Luisa Dupont | | Nando Tamberlani | as | Count Franchi | | Luigi Vannucchi | as | Luigi Sagona | | Lia Zoppelli | as | Aunt Mary |
| | Crew list: | | Anton Giulio Majano (Director) | | Alexandre Dumas père (Writer) | | Diego Fabbri (Writer) |
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