In these epics from JUSTICE LEAGUE OF AMERICA #31-76 and MYSTERY IN SPACE #75 the world's greatest super-heroes face Brain Storm, the Key, the Royal Flush Gang, Felix Faust, and numerous threats from across the cosmos! Guest-starring Metamorpho, the Justice Society of America and more! Now available in an over-sized Omnibus format, this new graphic novel is a must-own for any collector.