comicbooks.com Join Free
Marvel Mystery Comics #12 cover
Cover: Jack Kirby & Joe Simon

Marvel Mystery Comics #12

Oct 1940 · Marvel · 0.10 USD
☆ Be the first to review + Add to your collection — Join free

In "The Search For J. B.", the Angel ventures into a treacherous enchanted marsh to aid Shirley Smith, only to be swallowed by quicksand—until rescued by a towering, enigmatic creature serving a shadowy woman with a deadly secret. With the Piedmont mansion's former owners dead and the Angel and Smith now in peril, the mystery deepens as forces both ancient and sinister stir beneath the surface. Written by Paul Gustavson and illustrated by a then-unknown Jack Kirby (pencils) and Joe Simon (inks), this 1940 issue blends early superhero adventure with gothic suspense, all in a 10-cent comic that stands as a rare early collaboration from the creators who would soon define an era.

Contains 7 stories
The Search For J. B.
12 pp · Superhero
Human Torch [Jim Hammond]un-named Police CaptainRyan (Policeman)J. B. [Jane Bradley](villain, first actual appearance), Cinalli (villain, introduction, a lawyer)Slim (villain, introduction)

When the Torch, a fugitive from the very force he once served, is cornered by police he once called brothers, he’s offered a chance at redemption: track down the elusive criminal known only as J.B. — a man whose name and motives remain shrouded in mystery.

Three-Sided War
10 pp · Superhero
The Sub-Mariner [Prince Namor]DormaPrincess FenFolmaLynne HarrisLuther RobinsonMicky (death)Carter (wireless operator)The Nazis (villains, some die)

In "Three-Sided War," Namor races to rescue the survivors of a downed aircraft, only to find himself torn between duty and desire when he saves Lynne Harris—intending to claim her as his mate. The fate of the others, including Luther Robinson and Micky Harris, remains uncertain as the war and the sea pull them in different directions.

The Enchanted Marsh
9 pp · Superhero
The Angel [Tom Halloway]Shirley Smith (introduction)a hag (villain, introduction, death)Antone (villain, introduction, death)

In "The Enchanted Marsh," the Angel follows Shirley Smith into a treacherous, otherworldly swamp, only to be swallowed by quicksand—until a towering, enigmatic creature pulls him to safety. Now trapped in the grip of a sinister force, the Angel and Shirley find themselves at the mercy of a mysterious woman with a deadly past, guarding the secrets of the Piedmont mansion.

The Mystery House
7 pp · Detective-Mystery
Terry VanceDr. Watson (a monkey)Deadline Dawson (newspaper reporter)un-named gardener (death)Gregory (villain, introduction, death)

In "The Mystery House," Terry and his friends take shelter from a storm at an eerie, isolated mansion—only to spot a shadowy figure sneaking inside. What begins as a tense encounter in the rain quickly spirals into a gripping mystery that tests their wits and courage.

The Shark
8 pp · Superhero
ElectroProfessor Philo ZogPresident Franklin D. RooseveltThe Shark (villain, introduction, death)

In "The Shark," President Roosevelt faces a terrifying threat when a mysterious radio broadcast announces the Shark’s intent to destroy every ship at sea—prompting a desperate call to the brilliant Professor Zog to stop the menace before it's too late.

The Plot against Texas
6 pp · Western-Frontier
The Masked Raider [Jim Gardley]Lightning (Raider's horse)Gidden (villain)Breed (villain)Leek (villain)Snakey (villain)un-named outlaws (introduction for all)
Ka-Zar in America
10 pp · Jungle
Ka-Zar [David Rand]Zar (a lion)Ruth WilsonBradley (villain)

Ka-Zar, stranded in a foreign land after being captured, learns his captors plan to exhibit him in New York City. With quick thinking and a leap into the sea, he and his loyal panther Zar swim to the city, where Ka-Zar has a daring plan to free some of Zar’s brothers from the zoo.

ComicBooks.com Value

Our Model is In Beta
Raw (Good) $717
CGC 9.4 · 2 in census $22,763*
CGC 9.2 · 5 in census $12,847
CGC 9.0 · 3 in census $12,000*
CGC 8.5 · 3 in census $6,647
CGC 8.0 · 2 in census $6,647
CGC 7.5 · 2 in census $4,644
Show all 20 grades
CGC 7.0 $3,104
CGC 6.5 · 3 in census $3,104
CGC 6.0 · 5 in census $2,956
CGC 5.5 · 4 in census $2,803
CGC 5.0 · 3 in census $2,803
CGC 4.5 · 3 in census $2,803
CGC 4.0 · 4 in census $2,803
CGC 3.5 · 5 in census $2,021
CGC 3.0 · 3 in census $1,194
CGC 2.5 · 1 in census $1,018*
CGC 2.0 $834
CGC 1.5 · 1 in census $665*
CGC 1.0 · 1 in census $556*
CGC 0.5 · 1 in census $437*
* estimate — limited direct-sales data at this grade
Our model’s value — refined as new sales data arrives · CGC census counts shown where available

This exact issue on

CGC 5 $4,450–$5,000 2 listings
CGC 3.5 $4,600 1 listing
CGC $3,650–$4,361 2 listings
Raw — FR $2,400 1 listing
Verified matches for Marvel Mystery Comics #12 · eBay asking prices, seen 26 days ago

More listings for this title

MARVEL. JOURNEY INTO MYSTERY. THE KISS OF THE UNDEAD - AUG. #12 $20.07
Related listings we couldn't confirm as this exact issue · 1 total · seen 26 days ago

Read it digitally

Marvel Unlimited Marvel’s subscription reader Amazon Kindle Buy the digital edition
Opens a search on each platform — digital availability varies by title.

Sell my copy

Have this issue — or a whole collection? Get a fair offer from us, skip the marketplace fees and the hassle.

We Buy Collections ▸
Fast, fair offers · we handle grading & shipping

Full credits

writer, artist, inker, letterer Paul Gustavson
writer Ray Gill
cover pencils Jack Kirby
cover inks Joe Simon

Reprints

Reprinted in The Complete Jack Kirby #[2] (1997), Marvel Masterworks: Golden Age Marvel Comics #3 (2008), Golden Age Marvel Comics Omnibus #1 (2009), Timely's Greatest: The Golden Age Sub-Mariner by Bill Everett - The Pre-War Years Omnibus #[nn] (2019), Timely's Greatest: The Golden Age Human Torch by Carl Burgos Omnibus #[nn] (2019)

Key issues in Marvel Mystery Comics

Reviews

Reader reviews

No reader reviews yet.