"Who is Power Girl? Is she Superman's cousin from a parallel world? Is she the granddaughter of an ancient Atlantean sorcerer? Is she a pawn in a game of cosmic chess that threatens the known universe? Since her introduction in 1975, Power Girl has been an immensely popular character, weathering the many changes to the DC Universe without a sweat. And now she has become a pivotal player in Infinite Crisis - the most important comics storyline of 2006!"--P. [4] of cover.