Ben Stiller is set to reunite with Reality Bites writer Helen Childress for a new picture that couldn’t be more different from their last collaboration. The new project, titled The Mountain, will be a period horror story based on characters from Edith Wharton‘s novel Summer. The movie marks a sharp change of pace for Stiller, whose past projects have been mostly comedies. In addition, it represents a return to writing for Childress, whose Reality Bites was her first and last feature screenplay. More details after the jump.