December, 1380. When the corpse of Sir Robert Kilverby is discovered in a locked room, Brother Athelstan accompanies the King’s coronor to investigate. For the late Sir Robert had in his possession a sacred bloodstone which he was planning to donate to the Abbey of St Fulcher-on-Thames.

Crowner John is summoned to investigate the murder of a tin miner. The victim worked for Devon's most powerful and successful mine owner, Walter Knapman. There seems, to be only one motive - to sabotage Walter's business. But the tinners have their own laws, and they are none too pleased at Crowner John's interference. How on earth can Crowner John sort all this out when his own life is in turmoil?

Exeter, 1195. When a prominent burgess and guild-master falls dead across his horse, Crowner John declines to hold an inquest as the man had been complaining of chest pains and shows no sign of injury. Events take a sinister turn, however, when a straw-doll is discovered hidden under the man's saddle, a spike driven through its heart....

Exeter, 1195. Renovations at the new school in Smythen Street are disrupted by the discovery of a partially mummified corpse - and Sir John de Wolfe, the county coroner is called to investigate. Richard de Revelle, founder of the school, immediately tries to blame Nicholas de Arundell, a young outlawed knight living rough on Dartmoor. As Sir John discovers, Nicholas has good reason to bear a grudge against the unscrupulous de Revelle. But is he really a killer?

London, 1471. The War of the Roses rages on. Edward of York has claimed the English throne, and his Yorkist supporters gleefully slaughter their adversaries; there's no mercy for anyone who supported the Lancastrian cause. Margaret Beaufort - mother of Henry Tudor, the only hope for the House of Lancaster - knows her enemies are closing in. Desperate for help, she turns to Christopher Urswicke for protection. But when ruthless scheming and pitiless killings are the only routes to survival, Urswicke will have to choose where his loyalties truly lie.