The Woman In The Library by Sulari Gentill

Winifred (Freddie) is an author who is sitting at a table in the Boston Public Library when a murder takes place. While waiting for the police to let her leave she strikes up a conversation with the other three people at her table. Marigold who is studying psychology, Whit who is a law student and Cain who happens to also be an author. Could one of them be a murderer? The four become friends but soon it seems they are being targeted or harassed. Freddie is falling in love with Cain but do any of them really know that much about each other? The secondary story is told between Hannah an author and Leo an armchair editor who correspond through emails discussing a book that Hannah is writing a book about the woman in the library who was murdered. A bunch of misdirection, an unreliable narrator in Freddie and not knowing how the emails fit in make for a tight little thriller that will have you sure that you know whodunnit until you don't know.  4 stars and our LibraryReads pick.