Is The Spiral Staircase based on a book?

Common questions

Is The Spiral Staircase based on a book?

Yes. The Spiral Staircase is based on the book Some Must Watch by Ethel Lina White (1933).

Who wrote the book The Spiral Staircase is based on?

Some Must Watch was written by Ethel Lina White and first published in 1933.

Should I read the book before watching?

If you like knowing the full story and characters first, read Some Must Watch before you watch. Adaptations often change or cut plotlines, so the book is a different experience even if you've seen the movie.