Manuel Mur Oti was a Spanish screenwriter and film director. He also acted in one film, the neorealist Segundo López.
A woman who works as employee in a fashion store has to care for her ill mother. At the same time she falls in love with a bohemian man.
A tale of two families, the Mendozas and Alzagas, faced for generations by the water of a river separating their adjoining properties. Old grudges reappear when the two heirs fall in love.
A former singer lives alone with her fortune - and with her nephew, Fernando, a low character to whom she refuses to lend more money. Elisa leaves prison and starts a new life as a personal attendant to the aging singer, using her knowledge as a former nurse - a profession she can not return to. Fernando meets Elisa, and together they plan to poison the lonely woman, and use her money abroad. They plan their alibis well. But those who kill by the sword will perish by the sword.