John and Janet get a weird letter telling them to go to a ghost town which has an abandoned mine. There they contend with bad guys looking for hidden gold. They are aided by a mysterious Phantom.

John Mason returns to the Sally Ann mine to claim his half share. Janet Cater also returns although her father lost his half share to Joe Ryan. Ryan and his gang are also there to get the gold. A mysterious Phantom is also present. Mason's plan to expose Ryan as an outlaw and to force him to turn his share to Janet works. But when distracted by the Phantom, John is made a prisoner by the gang.—Maurice VanAuken <[email protected]>