Comic Title: Challengers of the Unknown #10
Publisher: DC (National Comics Publications, Inc.)
Address: 575 Lexington Avenue, New York, NY
Cover Date: Oct/Nov 1959
On Sale Date: August 18, 1959 Copyright Date August 18, 1959
Source: Library of Congress, Periodicals 1959

Frequency: Bi-monthly
Cover Price: $0.10
Page Count: 32
Editor: Jack Schiff

Title: "The Cave-Man Beast"
Pages: 12

Feature(s):
Challengers of the Unknown (of Earth-1)

Artist: Bob Brown

Reprinted In:
Showcase Presents Challengers of the Unknown Vol. 1 TPB (2006)

Feature Character(s)

• Challengers of the Unknown (last appearance in Challengers of the Unknown #9; next appearance in Challengers of the Unknown #10)
• Ace Morgan (last appearance in Challengers of the Unknown #9; next appearance in Challengers of the Unknown #10)
• Rocky Davis (last appearance in Challengers of the Unknown #9; next appearance in Challengers of the Unknown #10)
• Red Ryan (last appearance in Challengers of the Unknown #9; next appearance in Challengers of the Unknown #10)
• Prof. Haley (last appearance in Challengers of the Unknown #9; next appearance in Challengers of the Unknown #10)

Supporting Character(s)

• June Robbins (last appearance in Challengers of the Unknown #9; next appearance in Challengers of the Unknown #11)

Other Character(s)

• Dr. Manning (transformed into a caveman in this story; no further appearances)
• Several unnmaed hunters (no further appearances)

Comments:
June is depicted with brown hair in this story.

Synopsis:
June Robbins stumbles upon an injured caveman in the jungle. The caveman has been shot, and June patches him up. June learns that the caveman has been terrorizing a nearby town, so she calls in the Challengers.

The Challs arrive and investigate, finding a scientist, Dr. Manning, missing. Manning was experimenting with ways to communicate with animals. The caveman could be the results of one of the experiments. The Challs track down and with June’s help catch the beast. June gives the beast an elixir to drink, transforming the caveman into Dr. Manning.