This special volume of XIII from 2007 was illustrated by guest artist Jean Giraud (Moebius).
Little by little, XIII has reconstructed most of his life and figured out who he is. With one exception: There is still a gap in his college years, when Jason McLane became Kelly Brian. A gap that may mean the amnesiac adventurer is in fact an Irish terrorist, Seamus O'Neil. This flashback brings us back to Boulder, Colorado, and before that to Northern Ireland, to reveal the last piece of the XIII puzzle, and his final identity.