I chugged right through the Outsider […] I'm a bit surprised someone's not latched onto doing a film or show for this book yet, as I think you could do it rather cheaply and the King name alone will get you, at worse, a King following.
There was a TV show based on the book last year.
https://www.imdb.com/title/tt8550800/
I haven't seen it, but I've read the book (which I enjoyed).
Edit: You might want to read King's If It Bleeds, which contains a quasi-sequel novella.