Maigret is about to leave for the holidays but a colleague asks him for help in investigating the mysterious murder of a stripper and a noblewoman, both of which took place in Pigalle.
Gino Cervi
as Commissaire Maigret
Lila Kedrova
as Rose
Raymond Pellegrin
as Fred Alfonsi
Alfred Adam
as Ispettore Lognon
Christian Barbier
as Ispettore Torrence
Riccardo Garrone
as Lapointe
Claudio Biava
as Janvier
Enzo Cerusico
as Albert
Armando Bandini
as Sauterelle
Mario Feliciani
as Direttore polizia
José Greci
as Arlette
Antonio Battistella
as Dr. Pasquier