"A murderer terrorizes the city of Buenos Aires by attacking on the streets on rainy days and always leaving a card with the name "S. López". A local boarding house full of eccentrics appears to house a possible suspect."
Olga Zubarry
as Lila Espinoza
Guillermo Battaglia
as Boris Andreieff
Eduardo Cuitiño
as Lima
Nicolás Fregues
as Doctor Robledo
Pablo Acciardi
as Merlín
Margarita Corona
as Valeria Duval
Amalia Sánchez Ariño
as Sra. Vargas
Horacio Peterson
as Lucho Rivas
Carlos Perelli
as Norton
Agustín Orrequia
as Camelio Vargas
Ángel Boffa
as Barquinazo
Juan Corona
as Lamas
Orestes Soriani
as Doctor Kaplan
Alfredo Alaria
as Joven en la prueba de magia (uncredited)
Alberto Barcel
as Policía (uncredited)
Ramón J. Garay
as Conserje
Roberto Escalada
as Relator
Carlos Hugo Christensen
Director
Writer
George Andreani
Original Music Composer
Martín Morazzo
Editor
Alfredo Traverso
Director of Photography
Sebastian C. Perilio
César Tiempo
José Arturo Pimentel
Assistant Director
Antonio Rampoldi
Francisco Guglielmino
Set Decoration
Stanislas-André Steeman
Novel
Jean de Bravura
Art Direction