In a loop based on the historical example, Arsene Lupin is on the prowl, not only for jewels but also for the beautiful baroness (Brigitte Lahaie). At night the masked man climbs up to her balcony and gets involved in an extended orgy. When activities calm down, Arsene Lupin takes his opportunity and takes on the baroness, before he vanishes back into the night.
| Actor | Role |
|---|---|
 Brigitte LahaieThe baroness | The baroness |
| AAnita AndicOrgy participant | Orgy participant |
 Barbara MooseOrgy participant | Orgy participant |
 France LomayOrgy participant | Orgy participant |
 Liliane AllanOrgy participant | Orgy participant |
| SSylvia BrandNot listed | Not listed |
 Richard LemieuvreArsene Lupin | Arsene Lupin |
 Carmelo PetixNot listed | Not listed |