Grade: CBCS 2.5. Cover art by Win Mortimer. The Mightiest Team in the World!, script by Edmond Hamilton, pencils by Curt Swan, inks by Stan Kaye (pages 1-8) and John Fischetti (pages 9-12); Superman and Batman learn each other's secret identities [for the first time] when they meet on a cruise while trying to find a diamond thief. !