"XIII: The Conspiracy" is a graphic novel series created by Jean Van Hamme and illustrated by William Vance. It follows the story of a man with amnesia, known only as XIII, who discovers he is involved in a conspiracy linked to the assassination of a U.S. president. As he seeks to uncover his identity, he faces various adversaries and uncovers secrets about his past. The series combines elements of action, mystery, and political intrigue. It has been adapted into video games and a television series, expanding its reach beyond the original comic format. The narrative explores themes of identity, betrayal, and the quest for truth.