I presume because this is a foreign film it didn't get noticed as much as it deserved. It is a film of "D'entre les Morts" by Boileau and Narcejac, and was also filmed in 1958 by Alfred Hitchcock as "Vertigo" starring James Stewart and Kim Novak. Boileau and Narcejac are the writers of "Les Diaboliques" and the suspense generated by the situation in all their books is extremely good. However Hitchcock made the film depend far too much on the actors and also gave away the twist much too early, and spoiled the plot. This version is superior. It is a moody film and keeps the viewer wondering what is really going on right until the end.
