Nothing hits quite like a good mystery. Whether it's a seemingly impossible murder, a missing person, or a conspiracy set against the backdrop of a small town, the best TV mysteries keep you guessing right up until the credits roll. They're the kinds of shows that make you scrutinize every passing detail and second-guess each new character. Still, despite the overriding conviction that you cracked the case long before the detectives, it’s almost always someone you least expect.