John Marston's Ghost is an unlikely paranormal phenomenon that is rumored to make an appearance in Red Dead Redemption.
During the final mission in the game, The Last Enemy That Shall Be Destroyed, in the final cutscene, John is left to face a firing squad of U.S. Army troops headed by Edgar Ross. After he fires out a few shots with Dead Eye, the mob will all fire their guns at him, killing him.
Many players have reported that after the events of this mission, John's ghost haunts Beecher's Hope. Many players also claim that Rufus, the Marston Family dog, can also be found as he supposedly dies some time later after the final mission and can no longer be found roaming the ranch's grounds.