

29/11/1967
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

Mario David
as Mario

Henri Virlogeux
as Scholar

André Chaumeau
as Baron

Jean Franval
as DST inspector

Paul Préboist
as Agent

Alain Janey
as Fred

Sabine Sun
as Baroness

Yvon Sarray
as Pedestrian

Max Arian
as Extra worker (uncredited)

André Cagnard
as Jo (uncredited)

Guy Delorme
as Actor from the western (uncredited)

Marius Gaidon
as Police officer (uncredited)

Henri Guégan
as Actor from the western (uncredited)

Jean Ozenne
as Minister (uncredited)

Laure Paillette
as Traveler (uncredited)

Lionel Vitrant
as Actor from the western (uncredited)
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