The following is a complete list of comics involved in the Original Sin storyline, both the main series and assorted tie-in books. While only the core Original Sin mini-series by writer Jason Aaron and artist Mike Deodato, Jr. is necessary to understand the story, the various tie-ins expand the conflict and typically focus on characters who don't play a major role in the main series. Often, the tie-ins explore the various sins revealed by the Watcher's eyes in greater depth and how the leaks affect various Marvel heroes.