Discover the origins of one of the DCU's most powerful heroines in this new collection featuring Power Girl stories from SHOWCASE #97-99, SECRET ORIGINS #11 and the sold-out JSA CLASSIFIED #1-4!Is Power Girl the cousin of Earth-2's Superman? Granddaughter of an Atlantean mage? From the future or an alternate dimension? All Karen Starr knows is that she exists in a world that doesn't fit. When her powers begin changing or blanking out altogether, she searches for answers long denied her. The clues lead her to the deranged Psycho-Pirate, who may break her mind before she learns the truth. This collection features her first solo adventure, plus her second secret origin and the sold-out first four issues of JSA CLASSIFIED, key stories tied to the cosmic events of INFINITE CRISIS!