A good example of the genre, enjoyably readable, hovering on the verge of being incredible, not quite toppling over ... The violence of the novel is at times extreme, though, as the convention of the hard-boiled school of crime has it, men recover remarkably quickly from injuries that would land others in hospital for weeks. There are also scenes of repulsive torture, vile to read , nevertheless compelling, and there is a sadly convincing strand of the plot conserved with child abuse ... There is no reason why there shouldn’t be many more. He is an adequately convincing hero and Parks is a gifted story-teller. He knows when to cut a scene short and is adept at the important craft of pacing the narrative ... The plot brings in many fine things and others that are suitably grisly, and for a long novel it moves with a satisfying speed. There may be more violent deaths than is probable, but this is an acceptable convention in the rich and now crowded field of tartan noir.
Topping good ... May God Forgive is a fleet, dialogue-powered, satisfying story full of all the violence and depravity that readers have come to expect from Parks. But the novel's most devastating scenes involve McCoy's personal history, which his work won't do him the courtesy of letting him forget.
Superb ... A Glasgow native, Parks provides a crisp, authentic look and feel to the back alleys, rough neighborhoods, and ramshackle tenements of his hometown. This entry ranks with the best of Ian Rankin and Stuart MacBride.