The Blockbuster Breaks Loose! Following his last conflict with Batman and Robin, the massive creature known as Blockbuster had sought refuge in an undersea cave. However, some months later while Batman and Robin are breaking up a bank robbery, Blockbuster suddenly breaks through the floor and attacks.
While Robin handles the crooks, Batman attempts to appease the creature by removing it's mask, hoping its memories of Bruce Wayne would calm it down. However, his cowl some how sticks itself to his face, leaving Batman at the mercy of the Blockbuster until he is knocked unconscious.
Tracking down Blockbuster to another location later with Robin, they had devised an special flashlight that when shined on Batman's cowl it would resemble that of Blockbusters brother, Roland. However, the plan also fails when a mysterious attacker interferes with the battle and attempts to trap Batman in a coffin. However, Blockbuster attacks the mystery man, who then flees. Batman manages to break free of the trap and knock out the Blockbuster.
Later, it is revealed that the mystery attacker was the Outsider, who had orchestrated the whole event from the beginning.
Detective Comics Comic Books Issue 349 Written by Gardner Fox. Art by Carmine Infantino and Joe Giella. Cover by Joe Kubert. The Blockbuster Breaks Loose!; After months of being hidden in a cave underground, the Blockbuster reappears and dominated by the Outsider tries to kill Batman, in the fight Batman is knocked out and is trapped in a coffin; Then a confused Blockbuster begins to attack the Outsider and sends it far away. Written by Gardner Fox. Art by Carmine Infantino. The 13 O'Clock Robbery!; The Elongated Man and his wife Sue decide to go fishing at Lake Cherokee without knowing that this lake is dry. Casey the Cop humor page by Henry Boltinoff. Cap's Hobby Hints by Henry Boltinoff. 36 pages, full color. $0.12. Cover price $0.12.