Inspired by real-life events, Foster's seventeenth-century-set whodunit revolves around a respectable noblewoman accused of the murder of her lover.

'In the end, it did not matter what I said at my trial. No one believed me.'

Edinburgh, October 1679. Lady Christian is arrested and charged with the murder of her lover, James Forrester. News of her imprisonment and subsequent trial is splashed across the broadsides, with headlines that leave little room for doubt: Adulteress. Whore. Murderess.

Only a year before, Lady Christian was newly married, leading a life of privilege and respectability. So, what led her to risk everything for an affair? And does that make her guilty of murder? She wasn't the only woman in Forrester's life, and certainly not the only one who might have had cause to wish him dead.