Marlène
Returning from South America, a singer is hired by an old pal who runs a detective agency to use a perch as a night club performer to be an investigator.The amateur sleuth then falls for a girl whose brother is a jewel thief.

Manuel Ceccaldi

Marie-Hélène

Old lady

Lola

Betty
Commissioner

Bartender

Locker room lady

'La Puce'

César Luciani

Laurin

Breteville

Suzy

Harris

Michel (uncredited)
(uncredited)

Nurseryman (uncredited)

Pianist (uncredited)
(uncredited)

Corsican (uncredited)

Gangster (uncredited)

(uncredited)

Mother (uncredited)

(uncredited)
Cheated Husband (uncredited)