Comic Title: Blackhawk #171
Publisher: DC (National Periodical Publications, Inc.)
Address: 575 Lexington Avenue, New York, NY
Cover Date: April 1962
On Sale Date: February 8, 1962 Newsstand Date February 8, 1962
Source: House Ad, House of Mystery #121, Page 8

Copyright Date February 8, 1962
Source: Library of Congress, Periodicals 1962

Frequency: Monthly
Cover Price: $0.12
Page Count: 32
Editor: Jack Schiff

Title: "The Secret of Alien Island"
Pages: 9

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

Penciller: Dick Dillin
Inker: Charles Cuidera

Feature Character(s)

• Blackhawk (last appearance in Blackhawk #171; next appearance in Blackhawk #172)

Supporting Character(s)

• The Blackhawks (last appearance in Blackhawk #171; next appearance in Blackhawk #172)
• Hendrickson (last appearance in Blackhawk #171; next appearance in Blackhawk #172)
• Stanislaus (last appearance in Blackhawk #171; next appearance in Blackhawk #172)
• Andre (last appearance in Blackhawk #171; next appearance in Blackhawk #172)
• Chuck (last appearance in Blackhawk #171; next appearance in Blackhawk #172)
• Olaf (last appearance in Blackhawk #171; next appearance in Blackhawk #172)
• Chop Chop (last appearance in Blackhawk #171; next appearance in Blackhawk #172)

Villain(s)

• A band of Mercurian raiders (no further appearances)

Other Character(s)

• A group of friendly aliens (no further appearances)

Synopsis:
An alien ship is seen in the sky. The Blackhawks investigate and two of them are captured. Blackhawk disguises himself as an alien and penetrates the alien base to rescue his teammates. He learns that the aliens are friendly and trying to protect the Blackhawks from a band of raiders. Blackhawk returns to Blackhawk Island to find his other teammates under attack from the raiders. He uses a Blackhawk robot to make the alien weapons appear useless. The attackers then flee into space.