When someone tries to assassinate the US President during a tour of Morocco the West is puzzled. Of all recent Presidents why this one? What should be done with the shooter, dubbed Prisoner Zero.
And who exactly is he?
He might be a professional assassin, a lone obsessive or pawn of a vast terrorist conspiracy. He might hold the secret to a star drive that will change history - or simply be insane. Whichever, he is a man with an uncertain future and far too many possible pasts...
shortlisted BSFA Award
'Grimwood's hard-boiled prose reels you in like a velvet rope.' Entertainment Weekly
'Brilliantly imaginative, moving with the crystalline precision of a Swiss watch.' Kirkus (starred review)