Posted to the hostile territory of Dartmoor, Captain Innocent Stryker and his men are attacked by an elite cavalry unit commanded by the formidable Colonel Gabriel Wild and suffer heavy losses. Stryker has already clashed once with Wild, and the Roundhead has sworn to seek his revenge. After the attack, Stryker is faced with the annihilation of his company as he is hounded across the moor, eventually seeking shelter on an isolated tor populated by an enigmatic former priest who harbours no love for the King's cause. Colonel Wild is assisted in his revenge by Osmyn Hogg, Parliamentarian Witchfinder, who shares his own deadly history with Stryker. To save his honour and his life, Stryker must lead his men to glory from the protection of the lonely granite-topped hill. Into this atmosphere of intrigue and danger comes the beautiful but mysterious Cecily Cade. Stryker comes to her aid, unaware that she carries with her special knowledge that may prove the key to Royalist victory. The battle between Stryker and his old foes takes him from the bleak isolation of Dartmoor, through the war-ravaged lands of southern England and finally to Stratton, where the bloody battle between Cornwall and Devon will decide the fate of the south-west.