The Raven had a Kryptonite detector and he located the sky stone with it. He tried to get the Martingale family to sell it to him but they refused, because it had became a family good luck piece. Marvin White and Wendy Harris eventually acquire the sky stone when they were told by the Martingale family that the Raven was after it. Because of this, they asked if they could have it, because it could help them in their case, since they were searching for the Raven.