Thanks to Netgalley and the publisher for a copy of this book.

Four strangers are sitting at a table in a reading room in Boston Public Library when they hear a scream; while they wait for the all clear friendships are made.  One of the strangers happens to be a murderer.

This is the novel that an Australian author, Hannah is sending to Leo, who's in Boston and able to supply her with Bostonian feedback. This relationship is its own intriguing story in time.

A really unique structure and a fun, gripping read, never knew what was going to happen next.