Elvira Gosti

A mousy, poor manicurist seeks to switch places with her more glamorous, wealthy twin sister.

A 1941 film.

Julio Cesar (Enrique Herrera), writer of soap operas, is very upset nerves. Dr. Jimenez (Alberto Galán) recommends an institution that will give he a therapy to cure these scares. To avoid exposure to bad publicity, is camouflaged by the pseudonym Justiniano Conquian . By chance, a taxidermist (Joaquin Pardavé) also named. His case is different: it is a millionaire heir heritage potential, but will only be legally recognized if it meets a peculiar condition in the will, having to spend a whole month in the gloomy castle Conquian, competing with other heirs of fortune. Dr. Jimenez is bribed by a cousin of Justinian to send the false Conquian scares Castle into thinking that is the sanatorium.

Camelia, a prostitute who works in a low-class cabaret in Mexico City (called "The Blood Stain') meets Guillermo, a young man from the country who just arrived in the city looking for a better life. She offers to take care of him until he gets set up, and the initial friendship soon turns romantic. This inevitably causes problems with Gastón, Camelia's pimp.