1862, and with London in the wake of the Industrial Revolution, the World's first underground railway is under construction. When a body is discovered at the dig, it sparks the beggining of the latest deadly chapter in the centuries-old battle between the Assassins and Templars. Deep undercover is an Assassin with dark secrets and a mission to defeat the Templar stranglehold on the nation's capital. Soon the Brotherhood will know himas Henry Green, mentor to Jacob and Evie Frye. For now, he is simply The Ghost.