Comic Title: House of Secrets #67
Publisher: DC (National Periodical Publications, Inc.)
Address: 575 Lexington Avenue, New York, NY
Cover Date: Jul/Aug 1964
On Sale Date: May 14, 1964 Copyright Date May 14, 1964
Source: Library of Congress, Periodicals 1964

Frequency: Bi-monthly
Cover Price: $0.12
Page Count: 32
Editor: Jack Schiff

Title: "Doctor-7's Supernatural Ally"
Pages: 12

Feature(s):
Mark Merlin (of Earth-1)

Writer: Jack Miller
Artist: Mort Meskin

Feature Character(s)

• Mark Merlin (last appearance in House of Secrets #66; next appearance in House of Secrets #68)

Supporting Character(s)

• Elsa Magusson (last appearance in House of Secrets #66; next appearance in House of Secrets #68)

Villain(s)

• Doctor-7 (last appearance in House of Secrets #65; next appearance in House of Secrets #68)
• The Morloo (a supernatural creature; next appearance in House of Secrets #68)

Synopsis:
Doctor-7 returns and begins stealing several odd, but ordinary items. Mark Merlin realizes that the sorcerer is gathering the ingredients necessary to summon a supernatural creature called the Morloo. Mark is unable to stop Doctor-7 from completing the formula and summoning the Morloo. Mark recalls a formula to banish the creature, but when he attempts to use it, the Morloo is unaffected. Doctor-7 and the Morloo capture Mark and Elsa, but Mark saves himself with an illusion. He then deduces the missing ingredient in his banishment formula from something the Morloo said. He tries the revised antidote, which successfully banishes the Morloo. Doctor-7 is then captured and sent back to prison.