London, 1196. At the command of Richard the Lionheart, Sir John de Wolfe has left his beloved West Country for the Palace of Westminster, where he has been appointed Coroner of the Verge. But with the king overseas, embroiled in a costly war against King Philip of France, Sir John is dismayed to discover that the English court is a hotbed of greed, corruption and petty in-fighting.

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....

Following a series of murders which appear to be linked to a revival of heresy, some of the cathedral canons begin a crusade against this danger to the Church. When Sir John is accused of being too sympathetic to the heretics, the coroner finds himself having to seek sanctuary in order to save his own life. Can he survive long enough to unmask the real killer?

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?