Comic Title: Aquaman #20
Publisher: DC (National Periodical Publications, Inc.)
Address: 575 Lexington Avenue, New York, NY
Cover Date: Mar/Apr 1965
On Sale Date: January 14, 1965 Newsstand Date January 14, 1965
Source: House Ad, Brave and the Bold #58, Page 9

Copyright Date January 14, 1965
Source: Library of Congress, Periodicals 1965

Frequency: Bi-monthly
Cover Price: $0.12
Page Count: 32
Circulation: 226965
Editor: George Kashdan

Title: "The Sea King's Double Doom"
Pages: 25

Feature(s):
Aquaman (of Earth-1)

Artist: Nicholas Peter Cardy

Reprinted In:
Showcase Presents Aquaman Vol. 2 TPB (2008)

Feature Character(s)

• Aquaman (last appearance in Justice League of America #33; next appearance in Aquaman #21)

Supporting Character(s)

• Aqualad (last appearance in Aquaman #19; next appearance in Aquaman #21)
• Mera (last appearance in Aquaman #19; next appearance in Aquaman #21)

Villain(s)

• Kaltor (transforms into a sea creature in this story; no further appearances)
• Lukhan (an undersea ogre; no further appearances)

Other Character(s)

• Starene (Starene; no further appearances)
• Sea Imp (Aqualad's seahorse; next appearance in Aquaman #29)
• Various Atlanteans (no further appearances)

Flashback Appearance(s)

• Aquaman (last appearance in Aquaman #29; next appearance in Superboy #171)

Synopsis:
A citizen of Atlantis is taken prisoner by an undersea creature. Aquaman pursues the monster to an area containing underground caves. He rescues the man when the creature suddenly disappears. In the beast's place appears Aquaman's old friend and mentor Kaltor.

Kaltor explains that he has been hunting the beast. He requests that Aquaman join him in hunting down and killing the beast. The Sea King hesistantly agrees, and a hunting party is formed.

Mera follows the group and when the beast reappears, she is captured. Aquaman realizes that Kaltor himself is the beast and doesn't want to kill his old friend. Kaltor regains human form and explains that the change is not voluntary and will soon be permanent. When he becomes the beast again, Aquaman is forced to slay him. When the beast dies, it changes back into Kaltor, who miraculously survives, cured of his cursed affliction.