On the verge of death, a man entrusts Inspector Burma with an address. Burma conducts a difficult investigation with many twists and turns, which takes him from Lyon to Paris, following in the footsteps of the members of a mysterious business firm.

René Dary
Nestor Burma
Jean Clarens
Inspector Faroux

Gaby André
Suzanne Parmentier

Sophie Desmarets
Hélène Chatelain

Jean Parédès
Marc Covet

Albert Dinan
Bébert
Jean Thielment
Kimura

Pierre Juvenet
Mr. Montbrison
Jean Heuzé
Gérard Lafalaise

Manuel Gary
Bob Colomer
Geo Leroy
Paul Carhaix

Charles Lemontier
Inspector Bertin

Georges Paulais
Inspector Thomas

Daniel Mendaille
Georges Parry
René Alié
(uncredited)