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Keen Detective Funnies #12 cover
Cover: Frank Frollo
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Keen Detective Funnies #12

Dec 1939 · Centaur · 0.10 USD
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In "Four Gangs against the Masked Marvel," the Masked Marvel uncovers a web of deception spun by a mysterious cult leader known as Astra. Written and illustrated by Harry Campbell, this 1939 adventure sees the hero and his ally Carol dismantle a seemingly supernatural scheme rooted in cleverly disguised technology. The cover by Frank Frollo captures the tension of a world where light and sound mask a hidden enemy.

Contains 10 stories
Four Gangs against the Masked Marvel
12 pp · Detective-Mystery, Superhero
Masked MarvelZRZYZL (dies)Anton Roche (villain)Little MonkMartyFiorio
The Countess Who Feared Radio
5 pp · Detective-Mystery
Spark O'LearyDrusilla Melick (villain)PierreMr. GiovanniMr. Aitkin

In "The Countess Who Feared Radio," detective Spark investigates a diamond theft at a lavish ball, where the reclusive Countess de Rossini refuses to speak on the air—despite his efforts. When a mysterious voice on the radio claims to be the Countess, Spark captures a fragment of her story, only to find it doesn’t match the real woman’s voice. A twist reveals the caller was Drusilla Melick, a blackmailer using the Countess’s fear of the microphone to her advantage.

The Fiend's Organ of Destruction
6 pp · Detective-Mystery
Dan DennisTickInspector TeagueThe Fiend (villain)

In "The Fiend's Organ of Destruction," Dennis teams up with a criminally brilliant madman confined to an asylum, trading secrets for freedom—only to find the stakes rise when rival criminals snatch the Fiend and his deadly musical device. With the organ’s terrifying power unleashed, Dennis must outwit both the fiend and his captors using nothing but quick thinking and a surprising talent for ventriloquism.

Foggy Night, Part II
6 pp · Detective-Mystery
Jerry O'KeefeShortySlugger

In "Foggy Night, Part II," state trooper O'Keefe and his captured friend Shorty find themselves trapped in a remote smugglers’ cabin, where a thick fog shields their pursuers from sight—though not from the sharp eyes of Jerry, who spots the head smuggler silhouetted against the cabin light and takes a decisive shot. The story unfolds in tense, shadowed moments as escape and justice hang in the balance.

The Doctor's Revenge
6 pp · Crime
Dr. NilsJohn NilsAl TorskeMiss Lee

In "The Doctor's Revenge," a respected physician is kidnapped just as his son, Jo, begins medical school. Forced to perform secret surgeries on a gangster boss to conceal his injuries, the doctor loses his reputation and fakes his death to protect his son. When Jo sets out to avenge him, the truth unfolds in a tense reunion that leads to a shocking twist.

The Devil-God Murder Cases
5 pp · Detective-Mystery
John DeganLi Wan (villain)Wilfred AsheleyDr. Warner

In "The Devil-God Murder Cases," detective John Degan investigates two linked killings tied to a mysterious bronze idol from Tibet. When the artifact bears signs of blood and gunfire, he turns to scholar Li Wan—only to find himself trapped in a deadly mystery where knowledge may be a weapon and the past refuses to stay buried.

Untitled Humor story
1 pp · Humor, Detective-Mystery
Untitled Superhero story
8 pp · Superhero
The Eye (introduction)Ann Matte (Matte's daughter)E. D. Mattes (wealthy trader)Talu (Ann's old teacher)Islam Herat (villain)Carter (villain, dies)Kola (villain, dies)

In the shadow of exile, former trader E. D. Mattes and his daughter Ann find themselves stranded in New York, their lives upended by the rise of the ruthless Islam Herat in Afghanistan. When a mysterious figure known only as the Eye offers Mattes power in exchange for obedience, he’s thrust into a dangerous game of deception and survival. As Herat schemes to eliminate Mattes and seize Ann, the Eye intervenes—turning the tide in a skybound ambush and setting the stage for a chilling trap.

The Case of the Whispering Light
8 pp · Detective-Mystery
CarolThe Conqueror [Bolton Gates] (villain)Gloria Glamour (corpse)Al SternRolf Moderno

In "The Case of the Whispering Light," Dean and Carol investigate the murder of a movie star devoted to the enigmatic seer Astra, uncovering a web of deception hidden in crystal balls that project voices via beams of light. As they track the mystery to Astra’s Temple of Light, Dean confronts the shocking truth behind the prophet’s voice—and the long-buried enemy he thought was gone for good.

Untitled Non-Fiction story
1 pp · Non-Fiction, Crime
Charley Converse

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Cast · 2 characters

Full credits

writer, artist, inker Harry Campbell
cover pencils, inks Frank Frollo

Reprints

Reprinted in Detective Eye #2 (1940), Masked Marvel #3 (1940), Collection Fantôme #[106] (1946), Continuum #3 (2007), Continuum #4bis (2008), Golden-Age Greats Spotlight #13 (2013), L'âge merveilleux des Comics #5

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