A former secret agent, who retired and wrote a first novel which tells the eventful adventures of his hero "Le Léopard ", comes back to work, reluctantly helped by an old maid.

• Claude Brasseur
• Dominique Lavanant
• Marius Weyers
• Max Mégy
• Nini Crépon
• Liliane Bertrand
• Emilie Benoît
• Andrew Whaley