An additional story, initially intended as an episode of the series, was theatrically released as a standalone feature film titled Lovers in 1991.

The series, only authorized for audiences over eighteen years old, caused a great impact in Spain due to the crudeness of the crimes.

[1] Lovers was initially intended as the last episode of the second season to be titled Los Amantes de Tetuán, but its director Vicente Aranda proposed, and Televisión Española agreed, to expand the script and turn it into a feature film for its theatrical release.

The film accounts a crime committed by a couple living in the district of Tetuán de las Victorias in Madrid whose tragic outcome took place in La Canal, near Burgos in 1949.

[9] La huella del crimen was chosen television series of the year by the Valladolid International Film Festival in 1985.