Comic Title: House of Mystery #173
Publisher: DC (National Periodical Publications, Inc.)
Address: 575 Lexington Avenue, New York, NY
Cover Date: Mar/Apr 1968
On Sale Date: January 11, 1968 Newsstand Date January 11, 1968
Source: Direct Currents, Wonder Woman #175, Page 31

Copyright Date January 11, 1968
Source: Library of Congress, Periodicals 1968

Frequency: Bi-monthly
Cover Price: $0.12
Page Count: 32
Circulation: 158840
Editor: George Kashdan

Title: "So You're Faceless"
Pages: 11

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 Justice League of America #60; next appearance in Justice League of America #61)

Villain(s)

• Mr. V (identity revealed as Marco Xavier; dies in this story; last appearance in House of Mystery #170; no further appearances)
• Vulture (last appearance in House of Mystery #172; no further appearances)

Other Character(s)

• Pierre Carre (no further appearances)

Comments:
Mr. V aka Faceless is revealed as Marco Xavier in this story.

This is the final Silver Age Martian Manhunter solo story.

Synopsis:
Vulture hires Marco Xavier to steal an experimental weapon that will enable Mr. V to control the world. J'onn steals the weapon, intending to follow it back to Vulture headquarters. But he is weakened by fire and loses the crooks he is following.

J'onn resumes his role as Marco Xavier who is now wanted by police until he is picked up by Vulture agents. J'onn is finally taken to Vulture secret lair and meets Mr. V face-to-Faceless. Mr. V reveals that he knows J'onn has been posing as Xavier. He then removes his mask and shows the Martian Manhunter that he is the real Xavier. He also knows J'onn is vulnerable to fire and uses it against him.

The Martian Manhunter is helpless against his foe who prepares to use the stolen weapon to finish off J'onn. When the untested weapon is fired, it explodes. Vulture headquarters is destroyed, and only J'onn walks away safely.