| Unofficial Detective Comics Index |
Credits:
| Story | Gardner Fox |
| Art | Bob Kane, Sheldon Moldoff |
| Lettering | Sheldon Moldoff |
| Editing | Vin Sullivan |
Feature Character(s):
Supporting Character(s):
Villain(s):
- Monk (first appearance; a master of hypnosis)
- A large ape (first appearance; trained by The Monk to defend him from intruders)
Location(s):
- New York City, NY
- Paris, France
Comment(s):
Credits:
| Art | Fred Guardineer |
| Lettering | Fred Guardineer |
| Editing | Vin Sullivan |
Feature Character(s):
Villain(s):
- Elkins (first appearance; kills an animal tamer)
Credits:
| Art | Sven Elven |
| Lettering | Sven Elven |
| Editing | Vin Sullivan |
Feature Character(s):
Villain(s):
- Doctor Dupree (first appearance; uses a chemical to isolate memories and intelligence and injects into his own brain)
Comment(s):
- This story is printed in black, white and red.
Credits:
| Story | Jerry Siegel |
| Art | Joe Shuster |
| Editing | Vin Sullivan |
Feature Character(s):
Supporting Character(s):
Villain(s):
- A demented zookeeper (first appearance; kills patrons that torment the animals)
Location(s):
- New York City, NY