A psychopath the police have dubbed "Billy Dead Mates" is targeting pairs of best friends, and killing them one by one. Before they die, each victim is given a small white book. Detectives have failed to catch Billy, or figure out what the white books symbolize and why the killer leaves them behind. Stand-up comedian Kim Tribbeck has one of Billy's peculiar little books-- a stranger gave it to her at a gig she did last year. Was the stranger Billy, and is he targeting her? Kim has no friends and trusts no one, so why would Billy Dead Mates want to target her? -- adapted from jacket.

Originally published as The Narrow Bed in the United Kingdom in 2016 by Hodder & Stoughton.