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Keen Detective Funnies #21 cover
Cover: Ben Thompson
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Keen Detective Funnies #21

Jun 1940 · Centaur · 0.10 USD
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This anthology issue features multiple detective stories, with "The Masked Marvel" as the headlining story involving a masked hero leaping from a ship to combat the "Mad Raider" and his pirates at sea. Another story follows soldiers in a World War I trench setting, where they detect enemy snipers positioned behind outposts and must warn their comrades of the danger. A third story depicts "Tick" the detective shooting at a crook, resulting in the crook's arrest, though Tick must then convince two criminals to testify against the suspects rather than flee. The final featured story involves "Spark," a radio operator who infiltrates a criminal gang's headquarters, coordinates with police and military forces to stop a planned raid on arsenals and battleships, and ultimately prevents the criminals from escaping.

Contains 11 stories
Untitled story
9 pp
Counterfeit Conspiracy Case
8 pp

Dean Denton, America's celebrated ventriloquist-turned-scientific detective, arrives in England to find the nation gripped by a counterfeiting crisis—nearly perfect forged pound notes are crippling the economy, and Scotland Yard is baffled. When the British government calls on Denton for help, his investigation points to an inside job at the very heart of the currency printing operation, leading him into a deadly trap in the shadowy streets of Limehouse. With his assistant Carol Kane in danger and the clock ticking, Denton must use his scientific wits to uncover the conspiracy before the criminals cover their tracks—and him—forever.

Untitled story
6 pp
Crooks Can't Dream
6 pp

Dean Masters, the district attorney, secures a home for a young boy and helps a crook named Dapper Malone turn his life around—but when Dapper refuses a lucrative heist proposed by the ruthless Mike Bacco, the gangster exacts a terrible revenge. Grief-stricken and hunted by police who suspect him of the jewel robbery, Dapper tears through the city to confront Bacco and settle accounts at the Cottonwood Hotel.

Untitled story
6 pp
Untitled story
2 pp
The Amazing Story of One Man's Fight Against Evil!
6 pp
TNT Todd [Todd] (first appearanceorigin)
Untitled story
6 pp
G-Men at Work
1 pp · Non-Fiction
J. Edgar Hoover

A washed-up boxer named Tiny Lonergan prepares for what he hopes will be his final fight against heavyweight champion Kid Wilson, unaware that Wilson's handlers have concocted a dangerous scheme involving a potent odorless ether to sabotage their rival fighter. When a mysterious force known as the Eye appears to guide Tiny with advice, the stage is set for a night where cheaters and their own treachery will meet their reckoning in the ring.

Untitled Superhero story
9 pp · Superhero
TinyBess
Famous Spies
1 pp

ComicBooks.com Value

Our Model is In Beta
Raw (Good) $416
CGC 7.5 · 1 in census $1,774
CGC 7.0 none in existence
CGC 6.5 none in existence
CGC 6.0 · 1 in census $1,151*
CGC 5.5 none in existence
CGC 5.0 · 1 in census $1,053
Show all 15 grades
CGC 4.5 · 1 in census $845
CGC 4.0 · 1 in census $595
CGC 3.5 · 4 in census $595
CGC 3.0 · 2 in census $496
CGC 2.5 · 1 in census $436*
CGC 2.0 none in existence
CGC 1.5 none in existence
CGC 1.0 none in existence
CGC 0.5 · 1 in census $187*
* 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

writer, artist, inker Ben Thompson
cover pencils, inks Ben Thompson

Reprints

Reprinted in Men of Mystery Comics #43 (2003)

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