Comic Title: Challengers of the Unknown #9
Publisher: DC (National Comics Publications, Inc.)
Address: 575 Lexington Avenue, New York, NY
Cover Date: Aug/Sep 1959
On Sale Date: June 16, 1959 Copyright Date June 16, 1959
Source: Library of Congress, Periodicals 1959

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

Title: "The Men Who Lost Their Memories"
Pages: 10

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 #8; next appearance in Challengers of the Unknown #9)
• Ace Morgan (last appearance in Challengers of the Unknown #8; next appearance in Challengers of the Unknown #9)
• Rocky Davis (last appearance in Challengers of the Unknown #8; next appearance in Challengers of the Unknown #9)
• Red Ryan (last appearance in Challengers of the Unknown #8; next appearance in Challengers of the Unknown #9)
• Prof. Haley (last appearance in Challengers of the Unknown #8; next appearance in Challengers of the Unknown #9)

Supporting Character(s)

• June Robbins (last appearance in Challengers of the Unknown #8; next appearance in Challengers of the Unknown #10)

Villain(s)

• Dekkar and his henchmen (no further appearances)

Other Character(s)

• Martin Ferndale and Mr. Higgins (victims of Dekkar; no further appearances)

Synopsis:
June calls the Challengers when suddenly amnesia strikes four unrelated men. The Challs follow clues to a treasure site where they encounter Dekkar, a scientist, and his men. Dekkar uses a device on them which steals their memories. June arrives to help the Challs recover their memories. June tampers with the memory machine, so when Dekkar tries to use it on the Challs, their original memories are restored. They defeat Dekkar and recover the memories of the other victims.