Nothing innovative here, just good storytelling. Serial is a weekly, on-going tale that's spread out over several weeks. The inaugural effort is a true crime story that finds a man in prison for a murder committed over fifteen years ago. Let's just say it wasn't a cut and dry case. Each week, host Sarah Koenig peels away the layers of the story and provides enough twists and turns to whet the listener's appetite for what's going to be revealed in subsequent episodes. An offshoot of This American Life, and the first four installments indicate it's going to be worth following through to the conclusion.