Comic Title: House of Mystery #161
Publisher: DC (National Periodical Publications, Inc.)
Address: 575 Lexington Avenue, New York, NY
Cover Date: September 1966
On Sale Date: July 7, 1966 Newsstand Date July 7, 1966
Source: Direct Currents, Adventure Comics #347, Page 30

Copyright Date July 7, 1966
Source: Library of Congress, Periodicals 1966

Frequency: Monthly, with the exception of February, May, August and November
Cover Price: $0.12
Page Count: 32
Editor: Jack Schiff

Title: "The Unmasking of Marco Xavier"
Pages: 8

Feature(s):
Martian Manhunter (of Earth-1)

Writer: Jack Miller
Artist: Joe Certa

Reprinted In:
Showcase Presents:Martian Manhunter Vol. 2 TPB (2009)

Feature Character(s)

• Martian Manhunter (last appearance in House of Mystery #160; next appearance in House of Mystery #162)

Villain(s)

• Mr. V (last appearance in House of Mystery #160; next appearance in House of Mystery #162)
• Vulture (last appearance in House of Mystery #160; next appearance in House of Mystery #162)
• Abba Sulkar, Shtarker, and Grosse (Abba dies in this story; no further appearances)

Other Character(s)

• Marie Fouchere (a French secret service agent; no further appearances)
• Two scientists (no further appearances)

Synopsis:
Unable to locate two missing scientists, Martian Manhunter assumes the form of Marco Xavier and contacts his old girlfriend Marie Fouchere. Marie bring Xavier to a hidden Vulture base where Abba Sulkar is holding the scientists. Sulkar uses a new machine to steal Xavier's memories. He learns that Manhunter is posing as the playboy, but before he can act Marie frees him and the scientists. Sulkar is killed with his own weapon, taking the knowledge of Manhunter's secret to his grave.