About the Book: DC Finest: Superman – Kryptonite Nevermore showcases one of the most groundbreaking eras in Superman comics history, where a bold 1971 storyline redefined the Man of Steel. When all kryptonite on Earth turns to iron, Superman’s powers begin to fade—and a mysterious doppelgänger threatens global destruction. Featuring Bronze Age classics by legends Dennis O’Neil, Curt Swan, Cary Bates, and Len Wein, this DC Comics collection captures a transformative chapter in Superman’s legacy.