An amateur detective helps a hotel owner to find her younger sister.
Thierry Lhermitte
as Philippe Darland
Véronique Jannot
as Élisabeth Leroy
Daniel Duval
as le commissaire Turielle
Nana Mouloudji
as Valérie Leroy
Corynne Charbit
as Josy
Joaquín Hinojosa
as Kurant
Monique Tarbès
as Germaine, la secrétaire
Michel Adam de Villiers
as Charly
