July, 1556. En route to France and escape from Queen Mary's men, Jack Blackjack decides to spend the night at a Devon tavern, agrees to a game of dice - and ends up accused of murder. To make matters worse, the dead man turns out to have been the leader of the all-powerful miners who rule the surrounding moors - and they have no intention of waiting for the official court verdict to determine Jack's guilt.

But who would frame Jack for murder . . . and why? Alone and friendless in a lawless land of cut-throats, outlaws and thieves, Jack realizes that the only way to clear his name - and save his skin - is to unmask the real killer. But knowing nothing of the local ways and customs, how is he to even begin? As Jack's attempts to find answers stirs up a hornet's nest of warring factions within the town, events soon start to spiral out of control . . .