When two of their Marshal friends are killed, the Rough Riders are sent to investigate. They have to find the killers in a ghost town where the houses and an old mine are interconnected by s... Read allWhen two of their Marshal friends are killed, the Rough Riders are sent to investigate. They have to find the killers in a ghost town where the houses and an old mine are interconnected by secret passages and tunnels.When two of their Marshal friends are killed, the Rough Riders are sent to investigate. They have to find the killers in a ghost town where the houses and an old mine are interconnected by secret passages and tunnels.