Eyes Without a Face (Les Yeux sans Visage) from 1962 is a beautiful French film with a deeply haunting atmosphere - a disfigured girl in a mask wandering through this big house. I remember watching it in the cinema and being totally floored by a certain surgical scene
Very highly recommend this film to anyone who hasn't seen it though. (Hopefully you've not seen the version from the original US distribution which was cut to pieces, dubbed, and renamed
The Horror Chamber of Doctor Faustus)
The screenplay was co-written by Pierre Boileau and Thomas Narcejac, authors of the novels which became Les Diaboliques and Vertigo.