Stone Mattress by Margaret Atwood

A recently widowed fantasy writer is guided through a stormy winter evening by the voice of her late husband. An elderly lady with Charles Bonnet syndrome comes to terms with the little people she keeps seeing, while a newly formed populist group gathers to burn down her retirement residence. A woman born with a genetic abnormality is mistaken for a vampire, and a crime committed long ago is revenged in the Arctic via a 1.9 billion-year-old stromatolite.

(Virago Press)