A man wearing armor kidnaps Lois and Jimmy.

A criminal, who has a kryptonite ray gun, attempts to lure Superman into a trap by kidnapping Lois and Jimmy.

Superman stretches the laws of physics to the breaking, or rather splitting, point to prevent a coup in a Latin American country.

Before a time limit expires, Superman must find a way to get to a criminal hiding in a giant cube made of incredibly strong material that even the Man of Steel cannot penetrate with his usual powers.

A nuclear scientist who defected to the U.S. was exposed to nuclear radiation and has only a short time to live has been living in the desert. But agents from his country try to get him to return. Superman stops them but knows there's another agent whom they only by a code number will try to get him. When Clark tells Jimmy and Lois about him they go to see him and bec...

A prospector who has hit it rich donates a silver mine to needy children and names it the "Superman Silver Mine." A crook, who bears a strong resemblance to the prospector, abducts him. The prospector refuses to disclose the location of the mine. Lois Lane and Jimmy Olsen are imprisoned while investigating. The crook has a metal plate in his head and Clark uses this f...

An anti-memory vapor, developed by Professor Pepperwinkle, is stolen and used to commit crimes.

Professor Pepperwinkle creates a robot whom he calls Mr. McTavish. It isn't long before Jimmy and Lois learn about him and Professor Pepperwinkle shows him to them. Later Superman shows up but as he is approaching McTavish he starts to feel weak so he leaves. That's when they learn that Professor Pepperwinkle placed a meteorite in McTavish which they deduce is krypton...

A beautiful policewoman is asked to pose as Superman's wife in order to help him break up a gang of bank robbers.

Three circus performers use their abilities in various crimes to frame Superman.

Perry gets a wire from Lois, who's in Mexico, that she has discovered a donkey with psychic powers. Perry sends Clark down to investigate, and discovers that not only does the "burro" have psychic powers, but it has figured out Clark's secret identity as Superman.'

A criminal who was sent to prison by Superman and the Planet staff goes to the Planet office and tells them of his intention to go after them. They respond that Superman will stop him. Only problem is that he wears a lead mask to conceal his identity and he has other men wearing the same mask. Eventually he captures all of the Planet staff and puts them in a perilous ...

Professor Pepperwinkle isolates a dose of kryptonite called "Positive K", which winds up giving Lois and Jimmy the same types of powers as Superman.