Comic Title: Detective Comics #49
Publisher: DC (Detective Comics, Inc.)
Address: 480 Lexington Avenue, New York, NY
Cover Date: March 1941
Approx. On Sale Date: January 30, 1941 Copyright Date January 29, 1941
Source: Library of Congress, Periodicals 1941
Until 1958 DC did not report actual on sale dates to the copyright office
The publication dates listed in LoC records are NOT release dates.

Frequency: Monthly
Cover Price: $0.10
Page Count: 64
Editor: Fredric Whitney Ellsworth

Title: (The Echo)
Pages: 6

Feature(s):
Crimson Avenger (of Earth-2)

Writer/Penciller: John Lehti
Inker: Charles Paris

Feature Character(s)

• Crimson Avenger (last appearance in Detective Comics #48; next appearance in World's Best Comics #1)

Supporting Character(s)

• Mac (last appearance in Detective Comics #45; no further appearances)

Villain(s)

• Jon and Echo (a mad scientist and his creation; both die in this story; no further appearances)

Comments:
This story was not originally titled.

Synopsis:
A mad scientist creates a humanoid monster called the Echo. He unleashes the monster on the nearest city where it causes destruction and death. The Crimson Avenger waits for the monster to appear again, then follows it back to the scientist's laboratory. As the Crimson Avenger is apprehending the scientist, the creature is ordered to kill. The Crimson gets out of the way, while the Echo takes his creator over a cliff where they both perish.