1571: A contract killer is sent to Hailes Abbey to remove a priest suspected of plotting against Elizabeth I. But he has his own motives for murder.

Today: When a skeleton is discovered in the grounds of Hailes Abbey, alongside an artefact supposedly destroyed during the Dissolution of the Monasteries, TV producer Lewis Jordan comes to Cheltenham to make a documentary about the relic, but murder is close at hand. Called upon to track down a poison pen writer, private investigator Eden Grey soon finds herself on the hunt for a killer that will lead to revenge, espionage and bloodshed.