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....

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?

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?

Hugh of Singleton, fourth son of a minor knight, has been educated as a clerk, usually a prelude to taking holy orders. However, feeling no certain calling despite a lively faith, he turns to the profession of surgeon, training in Paris and then hanging out his sign in Oxford. A local lord asks him to track the killer of a young woman whose bones have been found in the castle cesspit. She is identified as the impetuous missing daughter of a local blacksmith, and her young man, whom she had provoked very publicly, is in due course arrested and sentenced at the Oxford assizes.

In the sapping summer heat of 1665, there is little celebration in London of the naval victory at the Battle of Lowestoft. The King, his retinue and anyone with sufficient means has fled the plague-ridden city, its half-deserted streets echoing the sound of bells tolling the mounting number of deaths. Those who remain clutch doubtful potions to ward off the relentless disease and dart nervously past shuttered buildings, watchful for the thieves who risk their lives to plunder what has been left behind.