Comic Title: House of Secrets #78
Publisher: DC (National Periodical Publications, Inc.)
Address: 575 Lexington Avenue, New York, NY
Cover Date: May/Jun 1966
On Sale Date: March 1, 1966 Newsstand Date March 1, 1966
Source: House Ad, House of Mystery #158, Page 19

Newsstand Date March 1, 1966
Source: Direct Currents, House of Mystery #158, Page 31

Newsstand Date March 1, 1966
Source: Newsdealer Magazine, V21 #2

Copyright Date March 1, 1966
Source: Library of Congress, Periodicals 1966

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

Title: "Monster Eclipso"
Pages: 13

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

Writer: Bob Haney
Artist: Jack Sparling

Reprinted In:
Showcase Presents:Eclipso TPB (2009)

Feature Character(s)

• Eclipso (last appearance in House of Secrets #77; next appearance in House of Secrets #79)

Supporting Character(s)

• Professor Simon Bennett (last appearance in House of Secrets #77; next appearance in House of Secrets #79)
• Mona Bennett (last appearance in House of Secrets #77; next appearance in House of Secrets #79)

Villain(s)

• Members of Eclipso's gang (no further appearances)

Synopsis:
Eclipso is again released from the body of Bruce Gordon. The villain makes his way to London where another eclipse is soon scheduled to occur. Bruce Gordon and the Bennett's follow Eclipso, but they don't reach him before the eclipse. Eclipso believes the second eclipse will allow him to remain permanently separated from Gordon, but instead it transforms him into a monster.

Though Gordon tries to use light bursts to stop the monster, they prove ineffective against Eclipso's new form. The villain then visits Stonehenge to uncover a hidden treasure. Eclipso succeeds in finding the treasure, which is a buried meteorite. The radiation from the meteorite return Eclipso to his normal form, then Gordon uses a light burst to return Eclipso to his own body.