• User


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.

  1. Jacques Besnard


Top Billed Cast

  1. Jean Lefebvre

    Jean Lefebvre

    Eugène Ballanchon, chercheur scientifique, célibataire

  2. Maria Latour

    Maria Latour

    Régine, l'espionne de monsieur Beauchard

  3. Bernard Blier

    Bernard Blier

    M. Beauchard, secrétaire de direction lié à un gang

  4. Michel Serrault

    Michel Serrault

    M. Granger, directeur du laboratoire scientifique

  5. Pierre Tornade

    Pierre Tornade

    l'inspecteur DST

Full Cast & Crew

Le Fou du labo 4



Status Released

Release Information

  • November 29, 1967


Original Language French

Runtime -

Budget -

Revenue -



No keywords have been added.

Content Score


Just a little bit more...

Top Contributors

Popularity Trend

By signing up for an account on TMDb, you can post directly to Twitter and Facebook.

You need to be logged in to continue. Click here to login or here to sign up.


s focus the search bar
p open profile menu
esc close an open window
? open keyboard shortcut window

On media pages

b go back (or to parent when applicable)
e go to edit page

On TV season pages

(right arrow) go to next season
(left arrow) go to previous season

On TV episode pages

(right arrow) go to next episode
(left arrow) go to previous episode

On all image pages

a open add image window

On all edit pages

t open translation selector
ctrl+ s submit form

On discussion pages

n create new discussion
w toggle watching status
p toggle public/private
c toggle close/open
a open activity
r reply to discussion
l go to last reply
ctrl+ enter submit your message
(right arrow) next page
(left arrow) previous page