The narrow bed - Sophie Hannah

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 . . .