Yasssssss this was a great one. The setup - "widow of a criminal who recently died" - made me wonder initially where the story would go, but everything's constantly in doubt: was he really a criminal? If not him, then who did the crime? What's the widow's involvement? Basically every person in this book becomes a suspect for something or other at some point which is the best kind of book, I think. Super great for fans of Girl on the Train, The Kind Worth Killing, Gone Girl et al