What if having a best friend was the most dangerous thing you could do?A killer that the police are calling 'Billy Dead Mates' is murdering pairs of best friends, one by one.
Before they die, each victim is given a small white book...
For months, detectives have failed to catch Billy, or work out what the white books mean. And then a woman, scared by what she's seen on the news, comes forward.
Stand-up comedian Kim Tribbeck has one of Billy's peculiar little books. A stranger gave it to her at a gig she did a year ago. Was he Billy, and does he want to kill her? Kim has no friends and trusts no one, so how - and why - could she possibly be Billy Dead Mates' next target?
This is the next chilling novel from the queen of psychological crime - a literary puzzle set to unlock the dark side of the mind . . .
Read MoreThe genious of Hannah's domestic thrillers - along with the twistiest plots known to woman - is that she creates ordinary people whose psychological quirks make them as monstrous as any serial killer - GuardianNo one writes twisted, suspenseful novels quite like Sophie Hannah . . . unpredictable, unputdownable and unlike anything else you've read before - Liane Moriarty, author of THE HUSBAND'S SECRETThere is an admirable, complicated cleverness about her stories . . . Think Agatha Christie at her best but updated to a time of Twitter and online dating in both its glory and ignominy - Independent on Sunday[One] of the great unmissables of the genre - intelligent, classy and with a wonderfully gothic imagination - The Times