Comic Title: Challengers of the Unknown #15
Publisher: DC (National Comics Publications, Inc.)
Address: 575 Lexington Avenue, New York, NY
Cover Date: Aug/Sep 1960
On Sale Date: June 14, 1960 Copyright Date June 14, 1960
Source: Library of Congress, Periodicals 1960

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

Title: "The Return of Multi-Man"
Pages: 12

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 #14; next appearance in Challengers of the Unknown #15)
• Ace Morgan (last appearance in Challengers of the Unknown #14; next appearance in Challengers of the Unknown #15)
• Rocky Davis (last appearance in Challengers of the Unknown #14; next appearance in Challengers of the Unknown #15)
• Red Ryan (last appearance in Challengers of the Unknown #14; next appearance in Challengers of the Unknown #15)
• Prof. Haley (last appearance in Challengers of the Unknown #14; next appearance in Challengers of the Unknown #15)

Villain(s)

• Multi-Man (last appearance in Challengers of the Unknown #14; next appearance in Challengers of the Unknown #20)
• Gurk (no further appearances)

Other Character(s)

• Two prison guards, Morgan F. Sanders, and some South American natives (no further appearances)

Synopsis:
Multi-Man is able to escape jail by creating an explosion in his cell. He gains super powers again and meets up with Gurk, the man who smuggled the explosives into the jail. Multi-Man agrees to help Gurk locate and steal two artifacts that are needed to complete a Golden Turtle.

The Challengers visit the site of the first theft and learn that Multi-Man is headed South where the final artifact is located. The Challs confront Multi-Man and are able to remove his powers with the antidote. Gurk however has taken the third artifact and escaped. Rocky and Prof try to follow Gurk, but turn up nothing. When they return to camp, the other Challengers have been captured by the natives, and Multi-Man has gained more powers, this time a super-brain.

After Multi-Man leaves, the natives allow the Challs to lead them to a hidden treasure cave. Mutli-Man and Gurk are already there, trying to steal it. The Challengers capture the crooks, and explain that the artifact was really a map to the cave. Multi-Man is now permanently stuck in his present form, and without antidote his powers cannot be removed.