Comic Title: Adventure Comics #410
Publisher: DC (National Periodical Publications, Inc.)
Address: 909 Third Avenue, New York, NY
Cover Date: September 1971
On Sale Date: July 29, 1971 Newsstand Date July 29, 1971
Source: House Ad, Adventure Comics #409, Page 46

Newsstand Date July 29, 1971
Source: Etcetera, V1 #5

Copyright Date July 29, 1971
Source: Library of Congress, Periodicals 1971

Frequency: Monthly (semi-monthly, March)
Cover Price: $0.25
Page Count: 48
Editor: Joe Orlando

Title: "The Nature of the Beast"
Pages: 14

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

Writer: John Albano
Penciller: Robert Oksner
Inker: Vince Colletta

Feature Character(s)

• Supergirl (last appearance in Adventure Comics #409; next appearance in Adventure Comics #410)

Villain(s)

• Nasthalthia Luthor (last appearance in Adventure Comics #408; next appearance in Adventure Comics #411)
• Mike Merrick (Nasty's neighbor; first appearance; next appearance in Adventure Comics #419)
• A tribe of mutant bird-men (no further appearances)

Other Character(s)

• Paul (a doorman; no further appearances)
• An unnamed professor (in flashback; no further appearances)

Synopsis:
Supergirl rescues Nasty's neighbor Mike Merrick from an attack by two bird-men. The attackers flee when Supergirl's powers cut out. Nasty and Linda then join Mike for a night on the town. The bird-men return to abduct Mike and Linda. Both are taken to an island where Mike worked as a professor's assistant. The professor transformed the natives into bird-men, then stole their sacred jewel. After Mike admits to the theft, he and Supergirl escape. Kara's powers cut out over the ocean, but Mike gets them to safety. Before Supergirl can recover Mike leaves the scene, but not before revealing that he knows her secret identity.