This issue has variants.
A "1 Year Later" tie-in.
Story continued from Action Comics (1938 series) #837 and continues in Action Comics (1938 series) #838. The table that Metallo is laid out on is an homage to the kids game "Operation".
Dan discusses Superboy's death. Ads for Action Comics #838, Checkmate #1, Green Arrow #61, and Superman #651. Appears on page 34 in this issue.
Total of 5 one-page and 1 two-page ads for: Justice League Unlimited (action figures, Mattel), The Joker Lego Batman Set #7782 with Secret Files and Origins of The Joker (toy, Lego), The Ultimate Eye Toy Challenge: Play 2/Operation Spy/Kinetic (games, Eye Toy, 2 pages), OK To Play? (video game ratings, Entertainment Software Rating Board), Big League Chew (gum), and Justice League (frozen novelties). Appear in various places in the issue.