Fire rages through Haunted Mine, economic mainstay of the coalmining town of Genesee, Colorado. Some miners have been rescued, but seventeen still are tragically trapped in the mine’s depths. Tony Sheridan, the handsome, outgoing and seemingly much-adored nephew of Genesee’s “benevolent despot,” old Matthew North, heroically descends to the bottom of the mine in a desperate last effort at rescue. He does not return, however, nor do any of the missing men. All hope is abandoned, the ventilating shaft is shut off and both downcast and upcast are covered over by boards. Five weeks later, after the fire has exhausted itself, the shafts are opened and men descend to clear out the wreckage. At the foot of the main shaft Tony’s scorched body is found—with a bullet through his heart! The bullet entered from the young man’s back in such a way as to preclude suicide. The seventeen men whom Tony had tried to rescue are found dead in the mine behind a half-built barricade, under such circumstances that beyond any possibility of doubt they all must have been dead long before Tony made it into the mine. So who or what on earth could have killed Tony Sheridan?