11/22/63 is a bestselling alternative history mystery novel by Stephen King. The story revolves around a high school teacher who discovers a portal that leads back in time to 1958. He embarks on a mission to prevent the assassination of President John F. Kennedy. As he delves deeper into the past, he uncovers a web of secrets and conspiracies. With its blend of historical events and suspenseful mystery, 11/22/63 has captivated readers worldwide.