CBS Films have set Dan Hageman and Kevin Hageman to polish the script to Guillermo del Toro’s adaptation of Alvin Schwartz’s classic trilogy “Scary Stories to Tell in the Dark.”

The books were released in 1981 (“Scary Stories to Tell in the Dark”), 1984 (“More Scary Stories to Tell in the Dark”) and 1991 (“Scary Stories 3: More Tales to Chill Your Bones”). The series consisted of short stories based on folklore and legend, accompanied by illustrations by Stephen Gammell. It’s sold more than 7 million copies worldwide.

Del Toro is developing the film with an eye to direct.

Marcus Dunstan and Patrick Melton first worked on the script for the project, with John August working on a later draft. Del Toro is producing along with Jason F. Brown, Sean Daniel and Elizabeth Grave.

The Hageman brothers worked on the script for Warner Bros. animated film “The Lego Movie,” and they are working on the “Ninjago” animated Lego movie. They’re repped by CAA, Underground and Hansen Jacobson.

Del Toro most recently directed “Crimson Peak.” He is repped by WME and manager Gary Ungar.

The news was first reported by the Hollywood Reporter.