S1·E15 Dark Vengeance

While working at a construction site, Frank unearths a curious box which has no latch for opening. He takes it home and finally opens it, only to discover a broken mirror and a toy horse. However, once the box is open, his wife Cindy begins to have nightmares about the horse. Delving into her own past, Cindy discovers that the toy horse is cursed. Can she and Frank break the curse before they become its next victims?