When Gideon Pierce flees the mining town of Liberty after being wrongly accused of killing a lawman, he vows to return and take revenge on the man responsible, Warner Gray. But with the ruthless businessman Rudyard Crosby now controlling the gold mine, he knows he'll be shot the moment he steps foot in town.

To take on Rudyard he needs to know why the businessman is determined to re-open the mine and return Liberty to its former glory. The answer lies with Emerson Hall, the man who owned the mine until fifty miners were killed in a terrible night of violence.

It seems that this event, along with Gideon's strange visions of another world and the mysterious apparition in the sky are all connected. That means Gideon's mission is sure to lead to a showdown, and the truth about what lies buried in the Eagle Heights mine will send even more men to Liberty's Boot Hill.