An owner of a crime fiction book shop in Boston is visited by an FBI agent. She tells him that a murderer is on the loose, killing people based on a list he posted on a blog years earlier. The list was his favourite murders from classic crime novels, including Strangers on a Train, Agatha Christie’s ABC Murders, Double Indemnity and others.
I would tell you more, but the whole point of this book — which is a classic mystery in its own right — is that there are so many twists and turns in the plot that any review which goes beyond that short description is, by definition, a spoiler. Recommended for fans of the genre.