This article ranks ten of the scariest films adapted from books, showcasing how some movie adaptations manage to equal or even surpass their source material. The pieces highlighted include classic horror films such as Jaws, where a great white shark terrorises a New England resort town, and The Ring, adapted from Koji Suzuki's 1991 novel, which follows a reporter investigating mysterious deaths linked to a cursed videotape. Other notable inclusions are I Know What You Did Last Summer (based on Lois Duncan's YA novel), The Ruins (adapted from Scott Smith's survival horror), and No One Gets Out Alive (based on Adam Nevill's award-winning novel but relocated to America for a fresh perspective on immigrant survival horror). The article suggests that whilst not every book-to-screen adaptation succeeds, these particular films successfully translate the terror of their source material to the screen, often with their own creative interpretations.