Cristina Guzmán is hired to impersonate the disappeared sister-in-law of a rich man.

Marta Santaolalla
as Cristina Guzmán

Ismael Merlo
as Marqués de Atalanta

Luis García Ortega
as Prince Valmore

Carlos Muñoz Arosa
as Joe

Lily Vincenti
as Gladys

Luis Martínez Tovar
as Bubi

Jorge Greiner
as Bert

Francisco Marimón
as Rouvier

Fernando Fernán Gómez
as Bob

Mary Vera
as Georgette