10 Movies You Didn’t Realize Were Based on Books

With the reboot of Total Recall hitting theaters this week, and Cloud Atlas on the horizon we’ve been thinking a lot about the way films are adapted from books, and how often people totally miss the books in favor of the movies that spring from them — including us.  With film adaptations of Philip K. Dick stories like Total Recall, which tend to veer so wildly that you might not recognize even if you had read the source material, we understand. But as it turns out, there are a lot more movies that we didn’t realize were based on books — until now. Click through to see our list, and let us know which movies surprised you (or which ones you totally knew about, smarty pantses) in the comments.

Psycho (1960)

In 1959, Peggy Robertson, Alfred Hitchcock’s production assistant, came across Anthony Boucher’s glowing review of Robert Bloch’s new novel Psycho in the New York Times Book Review. Intrigued, the bought a copy for her boss, who promptly snatched up the rights for $9,500, even though the studio rejected the story as a viable film premise. Well, we all know how that story ended — but we, at least, didn’t know how it began. If you didn’t either, it’s probably Hitchcock’s fault — after all, the man had Robertson buy as many copies of the original novel as she could get her hands on, so as not to spoil the film’s ending.