Comic Title: Challengers of the Unknown #19
Publisher: DC (National Comics Publications, Inc.)
Address: 575 Lexington Avenue, New York, NY
Cover Date: Apr/May 1961
On Sale Date: February 14, 1961 Newsstand Date February 14, 1961
Source: House Ad, My Greatest Adventure #54, Page 20

Copyright Date February 14, 1961
Source: Library of Congress, Periodicals 1961

Newsstand Date February 14, 1961
Source: Newsdealer Magazine, V15 #12

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

Title: "The Beasts from the Fabulous Gem"
Pages: 12

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

Artist: Bob Brown

Reprinted In:
Showcase Presents:Challengers of the Unknown Vol. 2 TPB (2008)

Feature Character(s)

• Challengers of the Unknown (last appearance in Challengers of the Unknown #19; next appearance in Challengers of the Unknown #20)
• Ace Morgan (last appearance in Challengers of the Unknown #19; next appearance in Challengers of the Unknown #20)
• Rocky Davis (last appearance in Challengers of the Unknown #19; next appearance in Challengers of the Unknown #20)
• Red Ryan (last appearance in Challengers of the Unknown #19; next appearance in Challengers of the Unknown #20)
• Prof. Haley (last appearance in Challengers of the Unknown #19; next appearance in Challengers of the Unknown #20)

Supporting Character(s)

• June Robbins (last appearance in Challengers of the Unknown #18; next appearance in Challengers of the Unknown #20)

Villain(s)

• Hank Roney and two monsters (no further appearances)

Other Character(s)

• A wise man and several villagers (no further appearances)

Synopsis:
A thief, Hank Roney, steals a gem from a sacred temple in the Middle East. When exposed to sunlight the gem releases a giant orange monster. The monster attacks the Challengers who are at a nearby archaeological dig. They manage to trap it in a cave in, then visit the shrine where the gem was stolen. A wise man explains the legend behind the gem and reveals that it contains another creature.

Roney releases the other creature and now realizes that possession of the gem gives him control over them. The original monster escapes, so Roney threatens a nearby village with the two beasts. The Challs manage to get the gem from Roney and return the beasts to their imprisonment. Taking the advice of the wise man, the Challs destroy the gem.