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Adventures into the Unknown #18 cover
Cover: Ogden Whitney
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Adventures into the Unknown #18

Apr 1951 · American Comics Group · 0.10 USD
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This 52-page anthology issue contains three horror stories: "The Undying Brain," in which a lonely scientist atop a desolate mountain creates documentation of his work before apparently taking his own life, leaving instructions that his brain must not die with him; "The Zombie Summons," featuring a nocturnal summoning of the undead by a mysterious figure in a graveyard; and "The Royal Wraith," depicting an uncanny duplicate of Empress Catherine the Great of Russia appearing in her throne room, only to vanish after being shot by guards, with strange marks later found on the Empress's body before her death.

Contains 9 stories
The Halls of Horror
10 pp
JeanVicFred OwensO. B.

When Fred Owens heads to Africa to collect python skins for his mysterious employer O.B., his niece Jean begins receiving unsettling letters describing supernatural encounters in the jungle—a vanishing ring, unseen presences, and a growing sense of dread. As Jean and her boyfriend Vic puzzle over Fred's increasingly disturbing account, the arrival of O.B. himself brings shocking news that sets the stage for a descent into something far darker than anyone anticipated. This 1951 tale from Adventures into the Unknown trades in creeping psychological horror and the occult, building a chilling mystery from letters, shadows, and the sinister intentions of a too-generous stranger.

Case of the Ghost Bat
1 pp
Ruby Moxey

A mysterious bat crashes through Ruby Moxey's door in the East End of London, setting off a frantic household search that extends deep into the night. When the creature reappears and the family finally captures it, they discover something far stranger than any ordinary animal—a phantom with secrets of its own.

The Undying Brain
6 pp
John HarleyAvatosMildred Harley
Dream of Death!
7 pp
Wade LarsonThe Laramie KidJeb

Sheriff Wade Larson has earned his reputation as a tough lawman who cleans up the Texas territory—but his greatest battle isn't with outlaws; it's against the nightmares that torment him day and night, draining his strength as he faces down the fearsome Laramie Kid. When a ghost from his past threatens to drag him into the darkness, Larson must find the will to survive both the hauntings and the showdown ahead in "Dream of Death!"

The Zombie Summons
8 pp
Claire VaughnNoctam

A woman dying of heart trouble, Claire Vaughn, finds herself caught between the living and the dead when the supernatural Dr. Noctam—a centuries-old sorcerer who commands zombies—marks her for his undead army. As sleepwalking draws her deeper into Noctam's sinister grasp and a mysterious zombie with a conscience threatens to interfere, Claire must decide whether to surrender to her fate or find a way to strike back against the darkness itself. Written by the team behind "The Zombie Summons," this 1951 tale blends psychological horror with supernatural dread, exploring what one desperate woman might do when death becomes not an ending, but a doorway to something far worse.

The Phantom Pirate
3 pp
Jack BalleyreAlonzo Gordayvon SturmhardtHugh Wilcox

A dying pirate's curse proves devastatingly real when fortune-hunters across centuries dare to claim the treasure buried in Buccaneer's Cove—and Captain Jack Balleyre's phantom enforces his promise from beyond the grave. From the greedy mate Alonzo Gorday to the skeptical Spanish captain Manuel Diaz to the ambitious diver Hugh Wilcox, each seeker learns that some treasures exact a price no amount of gold can pay. Will you be the one foolish enough to hunt for what lies waiting in the waters off the Dry Tortugas?

The Royal Wraith
1 pp
Catherine the Great

Catherine the Great, Empress of Russia, encounters a mysterious spectral duplicate of herself in her throne room—an eerie doppelgänger that vanishes when guards open fire. The next day brings a shocking discovery that ties the supernatural visitation to the empress's own fate in a way that'll make your skin crawl.

Spook-Buster's Doom
6 pp
Mrs. CourtneyOtis FindleyEd WhittierBess TownsendDeidameiaCheironHarry Townsend

Otis Findley, a celebrated ghost-buster who's made a career of exposing fraudulent mediums, travels to Athens when asked to investigate Deidameia, a mysterious sorceress who claims to summon spirits—including the late husband of a grieving widow named Bess Townsend—with the aid of a centaur spirit guide named Cheiron. Convinced he's uncovered another elaborate con, Findley attends a séance to catch Deidameia in the act, only to find the line between illusion and the genuinely supernatural far blurrier than he bargained for.

The Curse of Jacksonboro
2 pp
Lorenzo DowSeaborn Goodall

ComicBooks.com Value

Our Model is In Beta
Raw (Good) $63
CGC 9.8 · 1 in census $4,867
CGC 9.6 none in existence
CGC 9.4 · 1 in census $2,010*
CGC 9.2 none in existence
CGC 9.0 · 6 in census $895
CGC 8.5 · 2 in census $555
Show all 14 grades
CGC 8.0 · 3 in census $442
CGC 7.5 · 1 in census $394*
CGC 7.0 · 2 in census $327*
CGC 6.5 · 3 in census $151*
CGC 6.0 · 2 in census $131*
CGC 5.5 · 2 in census $110*
CGC 5.0 · 1 in census $104*
CGC 4.5 · 2 in census $89*
* estimate — limited direct-sales data at this grade
Our model’s value — refined as new sales data arrives · CGC census counts shown where available

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Full credits

artist, inker Emil Gershwin
cover pencils, inks Ogden Whitney

Reprints

Reprinted in Adventures into the Unknown #156 (1965), Shock #2 (1970), Ghoul Tales #5 (1971), Dario Argento presenta Profondo Rosso #8 (1991), Crypt of Horror #15 (2012), Collected Works: Adventures into the Unknown #4 (2013), Amazing Stories of Suspense #55, Sinister Tales #49

Key issues in Adventures into the Unknown

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