The Colour of Poison

Oxford, Spring 1353. When young bookseller Nicholas Elyot discovers the body of student William Farringdon floating in the river Cherwell, it looks like a drowning. Soon, however, Nicholas finds evidence of murder. Who could have wanted to kill this promising student? As Nicholas and his scholar friend Jordain try to unravel what lies behind William's death, they learn that he was innocently caught up in a criminal plot.

It is the year 1586. England is awash with traitors, plotting to assassinate the Queen and bring about a foreign invasion. The young physician Christoval Alvarez, a refugee from the horrors of the Portuguese Inquisition, is coerced into becoming a code-breaker and agent in Sir Francis Walsingham's secret service. In the race to thwart the plot, who will triumph - the ruthless conspirators or the equally ruthless State?

The year is 1143, and King Owain seeks to unite his daughter in marriage with an allied king. But when the groom is murdered on the way to his wedding, the bride's brother tasks his two best detectives - Gareth, a knight, and Gwen, the daughter of the court bard - with bringing the killer to justice.

England, 1176. Aelred Barling, esteemed clerk to the justices of King Henry II, is dispatched from the royal court with his young assistant, Hugo Stanton, to investigate a brutal murder in a village outside York. The case appears straightforward. A suspect is under lock and key in the local prison, and the angry villagers are demanding swift justice. But when more bodies are discovered, certainty turns to doubt - and amid the chaos it becomes clear that nobody is above suspicion.

In 1482 the Englishman Thomas Berrington is living in the last remnants of Moorish Spain. A physician, he is an unwilling friend to the most powerful man in the kingdom. When bodies start to turn up, each showing the marks of a savage attack, Thomas is asked to investigate.