Someone obviously booby-trapped the elevator--! Clark Kent may have been the intended victim-- But now this is a job for Superman! 
- — Superman
Action Comics #409 is an issue of the series Action Comics (Volume 1) with a cover date of February, 1972.
Synopsis for Superman: "Who is Clark Kent's Killer and Why is He Doing Those Terrible Things to Me?"
A would-be detective from another world tries to help Superman discover who is secretly trying to kill Clark Kent, only to learn that Superman is doing it himself, thanks to a personality split caused by not getting enough sleep.
Appearing in Superman: "Who is Clark Kent's Killer and Why is He Doing Those Terrible Things to Me?"
Featured Characters:
Supporting Characters:
- Shalox (Single appearance)
Antagonists:
Other Characters:
Locations:
Items:
Vehicles:
Synopsis for Teen Titans: "The Secret Olympic Heroes"
This story is reprinted from Teen Titans #4.
In the spring of 1964, young sprinter Davey Bradley wins his recent race making him a competitor in the coming Olympics, however after crossing the finish line Davey just keeps on running. News of Bradley's victory makes national news gaining the attention of the Teen Titans. Robin believes the boy has some serious problems. As fate would have it they are contacted by Davey's father who pleads for the Titans to find his son because he feels he is good enough to compete in the Olympics and, moreover, his father believes his boy could win the gold medal.
After deciding to help the Bradley's out, their alarm goes off and when investigating the Titans learn that their base has been infiltrated by Speedy, the Green Arrow's sidekick. Speedy has come to join the Teen Titans and had learned of the location of their base through the Justice League, he explains that he wants to help the Titans out as well because he too will be participating in the Olympics, however just to put on a trick archery demonstration. He explains that he needs the Titans aid because earlier while he was practicing he was attacked by a man from an organization called Diablo, who wished to try and sabotage his arrows in a bid to ruin the Olympics. The Titans decide to take on this case at the same time as trying to find Bradley.
Out on patrol, Wonder Girl traces Davey's trail and saves him from a pack of hobos, however the boy refuses to return. When Davey's father asks for a progress report, Robin explains the situation and that Davey doesn't find running as important as his father does. This causes the elder Bradley to lose his temper and Robin sends him away. This worries Davey who doesn't want to disappoint his father but also doesn't want to run. Robin assures the boy that he has a plan.
Later, the Teen Titans arrive in Tokyo, Japan for the Olympics and arrive to much fanfare. When signing autographs Robin suddenly realizes one of the autograph books he is signing is rigged to explode and throws it in the air, commanding Speedy to shoot it with an arrow to send it higher into the air where it explodes safely. With Davey joining them in disguise the Titans go to the training camp where all the competitors are staying. There Davey hears his fellows bemoan his abandonment and also runs into Kravik, a rival runner from another country. Later, when one of the houses is vandalized, accusing the occupants as cheaters, causing some of the competitors to come to blows, the Titans reveal that it was really done by members of the Diablo organization.
Later when Davey is practicing his running, he is confronted by his father who thinks he recognizes his son, but falls for his disguise and openly calls his son a quitter, upsetting Davey. Davey decides to actually compete in the Olympics and he and Speedy agree to train in the stadium that night. Meanwhile, the other Titans are looking for members of the Diablo organization and try to stop them from sabotaging the Olympic Torch, but find themselves knocked out by sleeping gas. They are shackled to a giant mock up of the Olympic rings that Speedy intends to light on fire with trick arrows as part of the ceremony. When the Titans find themselves about to be torched when Speedy practices this stunt, Davey spots what's going on and out runs the flanking members of Diablo to stop Speedy before he can light his teammates on fire. Speedy quickly subdues the members of Diablo and frees his fellow Titans.
The next day, after the opening ceremonies, Davey competes in the 400 meter sprint and wins third place. When a disappointed Davey confronts his father, however his father is still proud of his son especially after being told about how he helped save the Teen Titans and the two reconcile.
Appearing in Teen Titans: "The Secret Olympic Heroes"
Featured Characters:
Antagonists:
- Agents of DIABLO (Single appearance)
- Kravik (Single appearance)
Other Characters:
- David Bradley (Single appearance)
- Ted Bradley (Single appearance)
Locations:
- Japan
- United States of America
- unnamed big city
Items:
Vehicles:
Synopsis for Superman: "The Baffling Block of Metropolis"
One morning in Metropolis Park, a strange golden slab of unknown metal is discovered, having appeared overnight while the park was closed. Soon, the police are summoned to investigate. The man in charge of the operation, Capt. Horace Mitchell, disconfirms that the slab was a bomb. He also admits that the mystery should be left to Superman, but despite repeated appeals, he hasn't shown, leaving Capt. Mitchell to deal with the slab. Meanwhile, Superman himself is in the heart of Africa, tunneling into a mountain in search of the world's largest diamond.
Back in Metropolis, Capt. Mitchell tries using a cast-iron sledgehammer against the slab, but he only succeeds in denting the hammer. The police then use their rifles to blast the slab with "enough fire-power to knock over a giant redwood tree". The slab remains unharmed, leaving Mitchell to speculate that it may be an alien weapon designed to catch them off guard. He calls for the slab's removal, but the crane used to lift it snaps (it was only strong enough to lift 20 tons).
Back in Africa, Superman finds the diamond and uses a combination of super-compression and heat vision to mold it into a compact, ultra-hard diamond. "This is vital to the super-job I have in mind!" he thinks to himself. Meanwhile, at Metropolis Park, Capt. Mitchell's efforts against the slab continue, using flames, bombs, and acid against it. A scientist argues that the slab may be a token of peace from an alien race, but as to why he's trying to destroy it, Capt. Mitchell can only state that he's doing his duty.
At the end of the day, Superman finally shows up at the park. It is then revealed that Capt. Mitchell was on a secret request from Superman, explaining his attempts to crack the slab open. Superman had "forged [the] super-alloy out of alien elements [he] gathered from other planets", and trusted Capt. Mitchell to put the metal through an endurance test, having assisted him on police cases in the past. Capt. Mitchell confirms that the slab is impregnable, then asks what the slab is for. Superman says it is confidential, then takes the slab northward. His use for the diamond is revealed to be as a bit for a drill powered with super-strength, as even Superman himself can't penetrate the metal without help. He cuts away a keyhole with the drill and smooths out the edge with ultra-friction, thus completing his project: the door for his Fortress of Solitude.
Appearing in Superman: "The Baffling Block of Metropolis"
Featured Characters:
Supporting Characters:
- Metropolis Police Department
- Capt. Horace Mitchell
Other Characters:
- WGBS reporter (Unnamed)
- Scientist (Unnamed)
Locations:
- Metropolis
- Metropolis Park
- Africa
- Arctic Circle
Items:
- Ultra-Hard Diamond