| Unofficial House of Mystery Index |
Credits:
| Story | Jack Miller |
| Art | Joe Certa |
| Lettering | Stan Starkman |
| Editing | Jack Schiff |
Feature Character(s):
Villain(s):
- Professor Hugo
- Three prehistoric giant cavemen (first appearance for all three)
Location(s):
- Seaside
- Mayville City
Comment(s):
- It has been three weeks since last issue.
Story Reprinted in:
- Showcase Presents: Martian Manhunter #2 (2009)