Worth the wait... an often captivating, mass-market adventure story that's mostly more treat than trick -- James Owen * The Times *
Compare this with the thrillers written by Mr or Mrs Clinton, and you come away feeling that Hayes is the one who has more inside knowledge -- Jake Kerridge * Telegraph *
'[Hayes] is brilliant at action and military technology' -- John Dugdale * Sunday Times *
Epic and immersive, new and unexpected, and his research into spycraft is deep and compelling * Mail on Sunday *
Brilliant on the way agents operate and how the US spies on the world * Sun *