I just saw this on Yahoo News:

LOS ANGELES (Hollywood Reporter) - Castle Rock has picked up "Book of Shadows," an action-adventure pitch from Zoe Green.

The story follows a young man who must embark on the perilous journey of first love and face many trials of maturity while on the dangerous quest to close a mythical tome called "Book of Shadows" in order to restore balance to the world.

Castle Rock principal Rob Reiner will direct for the Warner Bros.-based studio. Reiner was in a general meeting with Green and told her of an idea on which he had been working. Green picked up on that and ran with it, fleshing it out.