Comic Title: Challengers of the Unknown #13
Publisher: DC (National Comics Publications, Inc.)
Address: 575 Lexington Avenue, New York, NY
Cover Date: Apr/May 1960
On Sale Date: February 16, 1960 Copyright Date February 16, 1960
Source: Library of Congress, Periodicals 1960

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

Title: "The Prisoner of the Tiny Space Ball"
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 #12; next appearance in Challengers of the Unknown #13)
• Ace Morgan (last appearance in Challengers of the Unknown #12; next appearance in Challengers of the Unknown #13)
• Rocky Davis (last appearance in Challengers of the Unknown #12; next appearance in Challengers of the Unknown #13)
• Red Ryan (last appearance in Challengers of the Unknown #12; next appearance in Challengers of the Unknown #13)
• Prof. Haley (last appearance in Challengers of the Unknown #12; next appearance in Challengers of the Unknown #13)

Villain(s)

• Dakyab and his followers (no further appearances)

Other Character(s)

• Zanna and his followers (Vraba and Benrun named; no further appearances)

Synopsis:
The Challengers find a tiny satellite that has crashed near their mountain headquarters. Inside is a tiny ball. An alien craft lands nearby, and its occupant steals the ball from the Challs. He is quickly captured and the ball opened to reveal another man.

The man inside the ball is Zanna, the deposed leader of the planet Ak-Sel. An evil scientist, Dakyab, has taken over Zanna’s planet and imprisoned him inside the ball. The other man is Vraba, a follower of Zanna, who was sent to rescue his leader. The Challs agree to accompany the men back to their world.

The Challs and Zanna land on Ak-Sel in the headquarters of Zanna’s followers. Dakyab sends his troops to recapture the exiled leader, while the Challs and Zanna plan to attack the scientist’s palace. Using a floating island, the rebels are able to defeat Dakyab’s forces. The evil leader is placed in a tiny ball, just as Zanna had been. When order has been restored, the Challs return to Earth.