Comic Title: Aquaman #56
Publisher: DC (National Periodical Publications, Inc.)
Address: 909 Third Avenue, New York, NY
Cover Date: Mar/Apr 1971
On Sale Date: January 5, 1971 Newsstand Date January 5, 1971
Source: House Ad, Adventure Comics #403, Page 62

Copyright Date January 5, 1971
Source: Library of Congress, Periodicals 1971

Frequency: Bi-monthly
Cover Price: $0.15
Page Count: 32
Contains: Ownership Statement
Circulation: 141332
Editor: Dick Giordano

Title: "The Creature That Devoured Detroit"
Pages: 20

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

Writer: Steve Skeates
Artist: Jim Aparo

Reprinted In:
Aquaman:Deadly Waters the Deluxe Edition HC (2020)

Feature Character(s)

• Aquaman (last appearance in Aquaman #55; next appearance in Justice League of America #88)

Villain(s)

• Shorty Thomas and his gang (no further appearances)
• Don Powers (aka the Crusader; a former police scientist turned vigilante; dies in this story; no further appearances)

Other Character(s)

• Warren Savin and Don (a talk show host and his sidekick; no further appearances)
• Denise Lovely (a talk show guest; no further appearances)
• Marvin Walson (a tv news anchorman; no further appearances)
• George and Ethel (a married couple; no further appearances)
• William Neilson (a scientist; no further appearances)
• Neal Dennis (a novelist; no further appearances)
• A group of scientists (Sam named; no further appearances)
• Phil (a security guard; no further appearances)
• Karen and her mother (no further appearances)
• Selma Mae Stanley (a Detriot resident; no further appearances)

Comments:
Talk show host Warren Savin is based on Johnny Carson and his sidekick on Ed McMahon.

This story has several sections with the following chapter titles:
"Crusader"
"The Crimefighter"
"The Whole Truth"
"Aquaman Vs. the Creature"
"No Blaze, No Glory"

Synopsis:
A satellite has been put into orbit above the city of Detroit. The satellite uses a mirror to focus sunlight on the city during the night. The perpetual light has cause the algae in Lake Erie to grow at a rapid pace. It now threatens the entire city. Many areas of the city are being evacuated.

Aquaman arrives in Detroit and seeks out Don Powers, a police scientist friend. He learns that Don has quit the force and started a science research lab. When Aquaman meets Don, he learns that his friend is responsible for the satellite. Powers is using it to combat crime, which he also does as a vigilante named the Crusader.

Aquaman demands that Powers destroy the satellite, but the scientist refuses. He then has Aquaman thrown out of the lab. Fearing that his work will eventually be destroyed, he goes out again as the Crusader. Secretly he knows that his eyesight is failing, which is why he needed the perpetual daylight. However, even in the light, the Crusader trips on a rooftop and falls to his death. Aquaman then returns to the lab and destroys the satellite.