Comic Title: Challengers of the Unknown #60
Publisher: DC (National Periodical Publications, Inc.)
Address: 575 Lexington Avenue, New York, NY
Cover Date: Feb/Mar 1968
On Sale Date: December 7, 1967 Newsstand Date December 7, 1967
Source: Direct Currents, Batman #199, Page 14

Copyright Date December 7, 1967
Source: Library of Congress, Periodicals 1967

Newsstand Date December 7, 1967
Source: Newsdealer Magazine, V22 #11

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

Title: "2 Hours to Die"
Pages: 7

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

Writer: France E. Herron
Artist: Bob Brown

Reprinted From:
Challengers of the Unknown #41 (1964)

Feature Character(s)

• Challengers of the Unknown (last appearance in Challengers of the Unknown #41; next appearance in Challengers of the Unknown #42)
• Ace Morgan (last appearance in Challengers of the Unknown #41; next appearance in Challengers of the Unknown #42)
• Rocky Davis (last appearance in Challengers of the Unknown #41; next appearance in Challengers of the Unknown #42)
• Red Ryan (last appearance in Challengers of the Unknown #41; next appearance in Challengers of the Unknown #42)
• Prof. Haley (last appearance in Challengers of the Unknown #41; next appearance in Challengers of the Unknown #42)

Villain(s)

• A cyclops and the Flying Fish-Man (appear in flashback to untold Challengers' adventures; no further appearances)

Comments:
This story is a Legion of Death Cheaters Special.

This reprint is presented as "A Demand Classic".

Synopsis:
Prof pilots a mini-sub to the ocean floor to conduct some demolition work. His sub becomes trapped by some large boulders. His explosives are set to go off within two hours. The other Challengers each attempt to rescue Prof before the bomb explodes. Ace and Red both fail and are injured in the attempt. With little time remaining Rocky frees Prof from the rocks. They get to safety just before the bomb explodes.