“Brilliant brilliant writing. Inventive, fascinating and disturbing as ever, Mo Hayder is right at the top of the game when it comes to terrific Crime and Psychological thrillers.” – Lizlovesbooks.com
“Sexual obsession, rejection as fuel for violence and revenge on the part of an arms dealer all add to a chilling, ominous atmosphere...another adventure for Caffery.” – Kirkus Reviews.
“Mo Hayder is a master of ratcheting up tension throughout a book – to the point that one must simply finish it before doing anything else. Such is the case with WOLF. I read it within 24 hours of opening the first page (a rarity for me).” – Deadly Pleasures
“It builds to its mesmerising climax with a brilliantly paced sense of menace. Masterful.” – Francesca Cookney, Sunday Mirror
“Hayder keeps you guessing adroitly – and has, in Caffrey, a maverick cop so fascinatingly weird that he makes Ian Rankin’s Rebus seem a stolid conformist.” – Sunday Times, Culture Magazine
"Anyone who finds the story repugnant is too easily repugged. Hayder’s work and characters are worth the unending nightmares they will inspire." - The New York Times