The Madman of Lab Four

This talkative and unevenly paced feature finds Fou (Jean Lefebvre) the inventor of a gas that makes the users fall in love. He is chased by his boss, the police, and spies, who seek to secure the secret recipe for their own selfish purposes. A shadowy American underworld figure tries to intimidate the inventor. A half-hearted attempt at comedy tries to go along with the double dealing and trickery of the thin plot of the film.

• Jacques BesnardDirector
• Jacques BesnardWriter
• Jean HalainWriter
• Bernard GérardOriginal Music Composer

• Jean LefebvreEugène Ballanchon, scientific researcher, single
• Maria LatourRégine, Mr. Beauchard's spy
• Bernard BlierMr. Beauchard, executive secretary linked to a gang
• Michel SerraultMr. Granger, director of the scientific laboratory
• Pierre TornadeDST inspector
• Pierre BrasseurFather Ballanchon
• Margo LionMrs. Ballanchon, Eugène's mother
• Robert DalbanMerchant, spy in the laboratory
• Mario DavidMario
• Henri VirlogeuxScholar
• André ChaumeauBaron
• Jean FranvalDST inspector