Anthony Horowitz’ 'Magpie Murders' takes out our twelfth recommendation spot for 2021, a story that took us under its wing for not one but two murder mysteries with completely different detectives, Watsons, and culprits. We covered Magpie Murders as part of a stretch of stories involving metafiction, and heartily recommend it if you have a lot of time to pore over the text, ideally camping out in a public library so you can crosscheck it with the other great works of fiction that it makes reference to.