A valuable painting has been stolen from an art gallery in Paris.. On a train travelling between Paris and Rome, Zutra, a mysterious and sinister character, tries to find the stolen painting.
| Actor | Role |
|---|---|
 Hélène PerdrièreEliane | Eliane |
 Jean DebucourtLacaze | Lacaze |
 Denise GreyMargot | Margot |
 Saturnin FabrePofessor | Pofessor |
 Arthur DevèreJeff Lambick | Jeff Lambick |
 Jacqueline PierreuxNicole | Nicole |
 Charles DechampsDelafosse | Delafosse |
 Robert PizaniCornaglia | Cornaglia |
 Jean TissierGiovanni | Giovanni |
| JJacqueline DorDenise | Denise |
| RRoger CacciaPigeonnet | Pigeonnet |
 Mario PodestaValentino | Valentino |
 Nicolas AmatoNot listed | Not listed |
 Madeleine BarbuléeBookseller | Bookseller |
 René BerthierOrchestra conductor | Orchestra conductor |
| PPhil ClariNot listed | Not listed |
 Philippe ClaySleeping car employee | Sleeping car employee |
 Jacques DalèsJournalist | Journalist |
 Joé DavrayNot listed | Not listed |
| JJean-Pierre DujayYoung man | Young man |
 Danièle FranconvilleNot listed | Not listed |
 René HellManager | Manager |
 Bob IngaraoBoxer | Boxer |
| MMarie-Reine KergalGisèle | Gisèle |
 Julien MaffreNot listed | Not listed |
| LLily MounetDenise's mother | Denise's mother |
| RRenée PageMadame Lambick | Madame Lambick |
 Georges PaulaisCommissioner | Commissioner |
 Georges PierreNot listed | Not listed |