The following FAQ entries may contain spoilers. Only the biggest ones (if any) will be covered with spoiler tags. It is assumed that no one who is diligently avoiding spoilers will be visiting this page in the first place.
Yes. Les Diaboliques is based on the 1952 novel Celle qui n'était plus [Translation: She Who Was No More] by French writers Pierre Boileau and Thomas Narcejac.
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