Credits

• Pencils: Win Mortimer
• Inks: Win Mortimer

Storyline

Scientist Ralph Gain invents a machine that can evolve animal subjects. His hoodlum friend, Johnny Farrel, accidentally kills him and uses the machine on himself, running up the evolutionary ladder until he finds himself devolved into a gorilla's form. He tries to convinced authorities that he is Gain but he slowly loses his mind and becomes a gorilla in thought as well as form.

Credits

• Script: Paulo Maffia
• Pencils: Bob Oksner
• Inks: Bernard Sachs

Storyline

In the far future, E-semex conceives a plan to defeat the Vegan invaders by warning people in the past.

Credits

• Script: John Broome
• Pencils: Alex Toth
• Inks: Bernard Sachs

Storyline

In the year 8685, mankind is ruled by a supreme machine that provides for their every need. After a meeting with a Neo girl, Athon discovers that the rule of the Machine is not so benevolent and works to destroy it.

Credits

• Script: Alan Hunt
• Pencils: Jim Mooney
• Inks: Ray Burnley

Storyline

A hoax goes awry and Bruce Karson accidentally journeys to Venus, only to be accused of staging a hoax on his return.

Credits

• Script: Wendy Sthulman
• Pencils: Gil Kane
• Inks: Frank Giacoia

Storyline

A robot wins $500 in a wrestling contest but wants his winnings in gasoline.

Credits

• Script: Hi Mankin
• Pencils: Hi Mankin
• Inks: Hi Mankin

Storyline

A brief description of the work of two young scientists.

Credits

• Pencils: Stookie Allen
• Inks: Stookie Allen

Storyline

Brainstorm travels to 1,000,000 BC to get proof that his time machine works.

Credits

• Script: Hi Mankin
• Pencils: Hi Mankin
• Inks: Hi Mankin

Storyline

Buzzy convinces Jeff to discuss whatever is troubling him with the school counselor.

Characters

Other

• Buzzy Brown

Credits

• Script: Jack Schiff
• Pencils: Win Mortimer
• Inks: Win Mortimer

Storyline

Quizzes related to astronomy, geology, and physics.

Credits

• Script: Julius Schwartz
• Pencils: Morris Waldinger
• Inks: John Sherwood

Storyline

A comic-strip style advertisement for United States Rubber Company's US Royal Bike Tires.

Storyline

An advertisement for the Daisy Air Rifleman newsletter and junior membership in the National Rifle Association.

Storyline

An in-house promotional advertisement for Mystery in Space (DC, 1951 series) #1.

Storyline

An advertisement for Bendix bicycle brakes.

Storyline

List of the members of the DC editorial advisory board and the DC comics titles.

Storyline

Charlie spots a phony railroad detective.

Storyline

The gang is lost in the forest until they stumble across Pud's bubble gum stand.

Credits

• Pencils: Ray Thompson
• Inks: Ray Thompson

Storyline

A snowball-throwing accident is an opportunity for an apology.

Storyline

While spear fishing, "R.C." and Quickie are attacked by a giant octopus.