The Marquise de Langrune invites her friends at her castle in Beaulieu. Among them is Lord Beltham who also came to bring her a significant sum of money. The mysterious Fantômas kills the Marquise during the night. Inspector Juve is sent on his trail.
L'inspecteur de police Paul Juve
Lady Beltham
Lord Beltham
Charles Rambert, le neveu de la baronne
La princesse Sonia Danidoff
Le président Jean-Marie Bonnet
L'abbé Sicot
Firmin
Fantômas/Görn/Etienne Rambert
La marquise de Langrune
Michel, l'adjoint de Juve
Le professeur Gabriel
Le mécano
