Emma, puertas oscuras (1974) José Ramón Larraz

An obscure sexy-horror flick. Emma is a teen-ager when she is the victim of a terrible road accident in London. Her brain suffers some alterations and her needs even psychiatric cares. Her mother, Silvia, confines her in the house, and the personality of Emma becomes very aggressive, causing a regrettable series of assassins and violence. 

Interesting and well-directed psycho-slasher made by Jose "Vampyres" Larraz. Some calculated and gory giallo-like stabbings, nudity and grim atmosphere make this obscurity worth checking out. There are some interesting and suspenseful stalk-and-slash sequences in "Emma,puertas oscuras",so if you are a fan of Castilian crimson give this rarity a chance.