Insomnia is a rare Stephen King novel that has not yet been adapted. The book centers on an elderly protagonist named Ralph Roberts who must square off against a mischievous supernatural being working at the behest of the dreaded Crimson King. 

The novel tackles abortion rights, ageism, and lets us know that a bout with insomnia is all you need to pull back the dull veil of our real world and see the colorful beauty and horror beneath it all.