An art dealer wants to buy a Modigliani, which is tattooed on the back of an old soldier.

Jean Gabin
as Count Enguerand de Montignac,aka 'Legrain'

Louis de Funès
as Félicien Mézeray

Dominique Davray
as Suzanne Mézeray

Paul Mercey
as Pellot

Yves Barsacq
as Postman

Henri Virlogeux
as Dubois, tax collector

Hubert Deschamps
as Professor Mortemont

Jean-Pierre Darras
as Lucien, postman

Patrick Préjean
as Detective #1

Joe Warfield
as Larsen