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.
as L'inspecteur de police Paul Juve
as Lady Beltham
as Lord Beltham
as Charles Rambert, le neveu de la baronne
as La princesse Sonia Danidoff
as Le président Jean-Marie Bonnet
as L'abbé Sicot
as Firmin
as Fantômas/Görn/Etienne Rambert
as La marquise de Langrune
as Michel, l'adjoint de Juve
as Le professeur Gabriel
as Le mécano
