Playing with Fire — Frances Fyfield

There's no place like home.

When Sarah Fortune inherits an apartment from one of her many lovers, she moves in and begins to receive letters from someone claiming the apartment belongs to him instead. At first she believes the letters to be harmless, but as they grow more threatening, she can no longer ignore the fact that she is being hounded by a psychopath. Then Sarah meets Henry, a timid, lonely man whose racketeering landlord is trying to force him to break his lease: litter in the shared hallway, continual noise, poison set out for his cat. Confident that they'll be able to deal with one another's problems, Sarah suggests a house swap. But it soon becomes clear that the two acquaintances are connected by far more than shared frustration, and they will discover that "home" may not be as safe as they thought …

Fans of Patricia Highsmith will devour this domestic twist on Strangers on a Train.