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The Madman of Lab Four (1967)

Genres: Comedy

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.

• Jean Lefebvre as Eugène Ballanchon, scientific researcher, single
• Maria Latour as Régine, Mr. Beauchard's spy
• Bernard Blier as Mr. Beauchard, executive secretary linked to a gang
• Michel Serrault as Mr. Granger, director of the scientific laboratory
• Pierre Tornade as DST inspector
• Pierre Brasseur as Father Ballanchon
• Margo Lion as Mrs. Ballanchon, Eugène's mother
• Robert Dalban as Merchant, spy in the laboratory