Written by Superman's creator, Jerry Siegel, this book features the history and first appearance of Kara Zora-El, the woman who would become Supergirl. From her escape from Argo, Krypton's last surviving city, to her adoption of the secret identity of Linda Danvers, to her first meeting with Superman, these tales are reprinted in their faithfully original form. Watch as the Girl of Steel goes from being "Superman's Secret Weapon" to one of history's greatest female heroes!