Former Chief Constable Bob Skinner has uncovered his fair share of shocking crime scenes over his thirty-year career. But none could prepare him for the sight he finds stowed in the back of a stolen car that collides with his on the outskirts of Edinburgh. As his former colleagues investigate, Skinner takes on an unusual commission of his own. The body count rises, motives appear, the hunt goes global, and potential conflicts surface. In his new guise, is Skinner is on the side of the angels or working against them?