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Cover: Bob Brown
Challengers of the Unknown #60
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The Thing That Could Not Die
Challengers of the Unknown [Rocky DavisRed RyanAce MorganProfessor Haley]Marty Ryan [Tino]The Challenger Haters [Multi-ManKraVolcano Man]Mr. Morton
2 Hours to Die!
Challengers of the Unknown [Rocky DavisRed RyanAce MorganProf Haley]Cyclops (flashback)
In "2 Hours to Die!", Prof and his team are trapped when a seaquake avalanche pins their sub beneath a seamount. With a bomb set to detonate in two hours and no way to escape, the crew scrambles to survive—each attempt to free the sub ends in disaster. As time runs out, Prof must rely on memory and quick thinking to find a way out before the explosion.
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CGC 9.8 · 2 in census $1,330*
CGC 9.6 · 4 in census $415*
CGC 9.4 · 4 in census $212*
CGC 9.2 · 5 in census $123*
CGC 9.0 · 2 in census $84*
CGC 8.5 · 3 in census $57*
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CGC 8.0 · 1 in census $44*
CGC 7.5 none in existence
CGC 7.0 · 1 in census $30*
CGC 6.5 · 2 in census $30*
CGC 6.0 · 1 in census $30*
CGC 5.5 none in existence
CGC 5.0 · 1 in census $30*
CGC 4.5 · 1 in census $30*
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Reprints
↩ Reprints Challengers of the Unknown #41 (1964)
Reprinted in Aventures Fiction #28 (1973)
Key issues in Challengers of the Unknown
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