Acting sibs Willow and Jaden Smith are attached to star in Warners' adaptation of Kazu Kibuishi's "
Amulet." Akiva Goldsman's Weed Road shingle and Will Smith and James Lassiter's Overbrook Entertainment will produce.
Graphic novel centers on a brother and sister who move into their late great-grandfather's home after their father dies. They must use his amulet to rescue their widowed mother from a beast who lures her into an underground world.