Dimension Films has just picked up the screen rights to Joe Hill's graphic novel Locke & Key. According to Variety, Hill, son of author Stephen King, made his first screen sale with his debut novel, Heart-Shaped Box, which Warner Bros. is planning to adapt into a feature film.

Locke & Key centers on a trio of children who become the caretakers of Keyhouse, a mansion in New England that is full of secrets and magic. The kids discover doors that take them to different places, give them powers and even alter gender and skin color. Behind one door is a dangerously violent creature.

Dimension Films has not announced when they plan to start production on Locke & Key.

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