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.
Olga Zubarry
as Elisa
Alberto de Mendoza
as Fernando
Luis Prendes
as Inspector
Katia Loritz
as Luisa
José Nieto
as Comisario Ávila
Luis Peña
as Chófer
Jesús Tordesillas
as Farmacéutico
José Marco Davó
as Doctor
Ana María Noé
as Doña Ana
Jorge Vico
as Carlos Alonso
Félix Dafauce
as Forense
Tota Alba
as Amiga de Sabina #1
