Justice Society of America #24

Synopsis

Billy Batson takes the JSA into the subway to find the secret entrance to the Rock of Eternity. With the help of Green Lantern's magic ring, they reach their destination but face an enraged Isis. Isis hurls Billy off the Rock, but Flash leaps into the void, grabs Billy, and tosses him back. While getting Billy to the safety of the throne room, Billy and Stargirl are met by the still-evil Mary Marvel. Elsewhere, traveling across the dimensions off of the Rock of Eternity, Flash encounters someone who may be able to help both Mary and Billy...their father.