Comic Title: Challengers of the Unknown #40
Publisher: DC (National Periodical Publications, Inc.)
Address: 575 Lexington Avenue, New York, NY
Cover Date: Oct/Nov 1964
On Sale Date: August 6, 1964 Copyright Date August 6, 1964
Source: Library of Congress, Periodicals 1964

Frequency: Bi-monthly
Cover Price: $0.12
Page Count: 32
Editor: Murray Boltinoff

Title: "The Super Powers of the Challengers"
Pages: 12

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

Writer: France E. Herron
Artist: Bob Brown

Feature Character(s)

• Challengers of the Unknown (last appearance in Challengers of the Unknown #39; next appearance in Challengers of the Unknown #40)
• Ace Morgan (last appearance in Challengers of the Unknown #39; next appearance in Challengers of the Unknown #40)
• Rocky Davis (last appearance in Challengers of the Unknown #39; next appearance in Challengers of the Unknown #40)
• Red Ryan (last appearance in Challengers of the Unknown #39; next appearance in Challengers of the Unknown #40)
• Prof. Haley (last appearance in Challengers of the Unknown #39; next appearance in Challengers of the Unknown #40)

Villain(s)

• Two unnamed hijackers (no further appearances)

Synopsis:
When two men hijack an air-sea vehicle, the Challengers pursue it using newly designed suits that give them amazing abilities. Ace uses a flying suit with jet pack to pursue the ship in the air. When Ace is forced down, Red protects him with a suit that creates lightning. Prof pursues the craft underwater in a pressure suit. Finally Rocky defeats the craft with his own muscles by putting a hole in the vehicle, causing water to rush in. The craft is forced to the surface, where the hijackers are then captured.