England, 1524: In Cambridge, the College of the Young Princes brings together all manner of people - with all manner of secrets. Among them is Bryony, an illiterate laundress and a stranger to the town, who lives in constant fear that her unusual upbringing and lack of friends will leave her vulnerable to accusations of witchcraft.
When Matthew Hobson, a scholar at the college, is found murdered and wrapped in linen that Bryony lost, she immediately becomes a suspect. But she is not the only one. Luke Hobson, a taciturn local tradesman who has sacrificed much for his charismatic but selfish brother, also has a motive for the murder.
With the university authorities eager to solve the crime, outsiders Bryony and Luke are forced into a wary alliance, knowing they have to track down the killer if they are to escape hanging. But can they trust in each other's innocence in order to uncover the truth?