After convicting a superior for corruption and shooting off a gangster's crown jewels, the career of Hamburg's most hard-bitten state prosecutor, Chastity Riley, has taken a nosedive: she has been transferred to the tedium of witness protection to prevent her making any more trouble. However, when she is assigned to the case of an anonymous man lying under police guard in hospital - almost every bone in his body broken, a finger cut off, and refusing to speak in anything other than riddles - Chastity's instinct for the big, exciting case kicks in.

On a warm September morning, an unconscious man is found in a cage at the entrance to the offices of one of the biggest German newspapers. Closer inspection shows he is a manager of the company, and he’s been tortured. Three days later, another manager appears in similar circumstances. Chastity Riley and her new colleague Ivo Stepanovic are tasked with uncovering the truth behind the attacks, an investigation that goes far beyond the revenge they first suspect...to the dubious past shared by both victims.

Hamburg state prosecutor Chastity Riley investigates a series of arson attacks on cars across the city, which leads her to a startling and life-threatening discovery involving criminal gangs and a very illicit love story...Night after night, cars are set alight across the German city of Hamburg, with no obvious pattern, no explanation and no suspect. Until, one night, on Mexico Street, a ghetto of high-rise blocks in the north of the city, a Fiat is torched. Only this car isn’t empty.

Twenty floors above the shimmering lights of the Hamburg docks, public prosecutor Chastity Riley is celebrating a birthday with friends in a hotel bar when 12 heavily armed men pull out guns and take everyone hostage. Among the hostages is Konrad Hoogsmart, the hotel owner, who is being targeted by a man whose life - and family - have been destroyed by Hoogsmart’s actions. With the police looking on from outside - their colleagues’ lives at stake - and Chastity on the inside, increasingly ill from sepsis, the stage is set for a dramatic confrontation.

State prosecutor Chastity Riley runs off to Glasgow. For one, there is that letter, written by a lawyer, that lures her to the birthplace of her great-great-grandfather. And secondly, her life in Hamburg has arrived at a sad impasse. In the rough Scottish city, she meets Tom, who knows the key that unlocks the Rileys’ family secret. She never dared confront the painful truths about herself, but some whisky and a few ghosts help her to do just that.