Comic Title: Challengers of the Unknown #83
Publisher: DC (DC Comics Inc.)
Address: 75 Rockefeller Plaza, New York, NY
Cover Date: Oct/Nov 1977
On Sale Date: July 19, 1977 Newsstand Date July 19, 1977
Source: Comic Reader, #145

Copyright Date July 19, 1977
Source: Library of Congress, Periodicals 1977

Newsstand Date July 18, 1977
Source: Daily Planet, Vol. 77 #28
Listed as on sale the week of July 18th

Shipping Date June 28, 1977
Source: DC Coming Attractions, #8

Frequency: Bi-monthly
Cover Price: $0.35
Page Count: 32
Editor: Jack C. Harris

Title: "Seven Doorways to Destiny"
Pages: 17

Feature(s):
Challengers of the Unknown (of Earth-1)

Writer: Gerry Conway
Penciller: Keith Giffen
Inker: John Celardo
Colorist: Jerry Serpe

Reprinted In:
Swamp Thing:The Bronze Age Vol. 2 TPB (2020)

Feature Character(s)

• Challengers of the Unknown (last appearance in Challengers of the Unknown #82; next appearance in Challengers of the Unknown #84)
• Ace Morgan (last appearance in Challengers of the Unknown #82; next appearance in Challengers of the Unknown #84)
• Red Ryan (last appearance in Challengers of the Unknown #82; next appearance in Challengers of the Unknown #84)
• Rocky Davis (last appearance in Challengers of the Unknown #82; next appearance in Challengers of the Unknown #84)
• Prof. Haley (last appearance in Challengers of the Unknown #82; next appearance in Challengers of the Unknown #84)

Guest Star(s)

• Swamp Thing (last appearance in Swamp Thing #24; next appearance in Challengers of the Unknown #84)

Supporting Character(s)

• June Robbins (last appearance in Challengers of the Unknown #82; next appearance in Challengers of the Unknown #84)
• F. Gaylord Clayburn III (last appearance in Challengers of the Unknown #82; next appearance in Challengers of the Unknown #84)

Villain(s)

• Heathcliff Monroe (last appearance in Challengers of the Unknown #82; no further appearances)
• M'Nagalah (last appearance in Challengers of the Unknown #82; no further appearances)
• Residents of Perdition (last appearance in Challengers of the Unknown #82; no further appearances)
• Rh'Thulla and Kag'Naru (M'Nagalah's brother and sister; in flashback; no further appearances)

Guest Appearance(s)

• Ruth Monroe (last appearance in Swamp Thing #24; no further appearances)

Cameo Appearance(s)

• Linda Holland (in a computer file)

Comments:
Alec Holland once again becomes the Swamp Thing in this story.

Chapter 2:"Savior from the Swamp?"
Chapter 3:"The Gods Crawl Closer"
Chapter 4:"All Monsters Good and Evil"

This story is continued from Challengers of the Unknown #82 and continues in part in Challengers of the Unknown #84.

Synopsis:
The Challengers are overcome by the infected townspeople of Perdition and their leader Heathcliff Monroe. Monroe holds Red and June as hostages and forces Ace and Rocky to travel to Britain to perform a spell. The spell opens a doorway to M'Nagala's dimension and will allow his family to come to Earth. With his friends lives in the balance, Rocky opens the portal. When a creature emerges, Ace detonates an explosive which seals the portal.

Meanwhile, Clayburne recruits Alec Holland to stage a rescue. Holland has been temporarily restored to human form, but he is now slowly reverting into the Swamp Thing. They rescue Prof. who directs them to use sound against the fungus which has infected him and the townspeople. The plan succeeds. The Challengers are rescued. Holland reverts to Swamp Thing and traps M'Nagala inside Monroe's burning church. Swamp Thing then retreats back to the swamps.