Comic Title: House of Mystery #167
Publisher: DC (National Periodical Publications, Inc.)
Address: 575 Lexington Avenue, New York, NY
Cover Date: June 1967
On Sale Date: April 6, 1967 Newsstand Date April 6, 1967
Source: Direct Currents, Sea Devils #35, Page 32

Newsstand Date April 16, 1967
Source: Newsdealer Magazine, V22 #2

Copyright Date April 6, 1967
Source: Library of Congress, Periodicals 1967

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

Title: "Marco Xavier, Manhunter's Ally"
Pages: 9

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 #166; next appearance in Justice League of America #54)

Villain(s)

• Mr. V (last appearance in House of Mystery #166; next appearance in House of Mystery #169)
• Vulture (Monsieur Ferreau named; last appearance in House of Mystery #166; next appearance in House of Mystery #169)

Synopsis:
Mr. V contacts Marco Xavier and asks him to provide tips to the Martian Manhunter. Mr. V fears that Xavier has been too involved in Vulture's recent activities, so by tipping off the Manhunter he hopes to divert suspicion.

Since Xavier is really the Manhunter he follows the tip off and stops one of Vulture's crimes. When Mr. V orders Xavier to provide another tip, J'onn becomes suspicious. He discovers that Vulture has a bigger operation planned elsewhere, and the tips are being used to divert the Manhunter.

J'onn stalls the Vulture agents in order to throw off their time table. In this way he is able to stop both crimes and prevent Vulture's plan from succeeding.