John Rebus stands accused: the once legendary detective is on trial, facing the rest of his life behind bars.

How does a hero turn villain?
Or have times changed, and the rules with them?

Detective Inspector Siobhan Clarke tackles Edinburgh's most explosive case in years, as a corrupt cop harbouring huge secrets goes missing.

But is her loyalty to the police or the public? And who can she trust when nobody is truly innocent - including her former mentor Rebus - and a killer walks among them?