Mired in grief after tragic recent events, state prosecutor Chastity Riley escapes to Scotland, lured to the birthplace of her great-great-grandfather by a mysterious letter suggesting she has inherited a house. In Glasgow, she meets Tom, the ex-lover of Chastity’s great aunt, who holds the keys to her own family secrets – painful stories of unexpected cruelty and loss that she’s never dared to confront. In Hamburg, Stepanovic and Calabretta investigate a major arson attack, while a group of property investors kicks off an explosion of violence that threatens everyone. As events in these two countries collide, Chastity prepares to face the inevitable, battling the ghosts of her past and the lost souls that could be her future and, perhaps, finally finding redemption for them all.