comicbooks.com Join Free
Keen Detective Funnies #23 cover
Cover: Harry Sahle
📖 Read freeFull issue · restored, free to read

Keen Detective Funnies #23

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

# Keen Detective Funnies #23 The Masked Marvel story involves a plot centered on stolen aircraft and smuggling operations. After intercepting a coded message from a fast-moving stolen plane, the Masked Marvel pursues the aircraft and discovers a criminal ring operating out of San Francisco involving opium smuggling and murder. The villain Falco attempts to recruit a man named Spigetti into his criminal organization, but when Spigetti refuses, Falco uses a deadly trap involving a coil spring device; the Masked Marvel intervenes to stop Falco and his gang. The issue also features the debut of Air Man, a new winged hero introduced on the cover.

Contains 7 stories
Untitled story
10 pp
The Air Man [Drake Stephens] (introduction, origin)
The Return of the Conqueror
8 pp · Detective-Mystery, Superhero

Dean Denton, America's foremost ventriloquist-turned-scientific detective, discovers that his ancient nemesis the Conqueror has escaped from a Belgian Congo prison and is now orchestrating a sinister campaign along the Tonigam Line—using a hypnotic light device to enslave captured soldiers from warring nations and bend them to his will. Denton infiltrates the Conqueror's hidden cavern network, pretending to fall under the hypnotic spell, to sabotage the villain's master plan before he can seize control of the entire region. With his wits and quick action, Denton manages to turn the tide against the Conqueror's raiding forces—but the war criminal escapes, and the real battle is only just beginning.

Untitled story
7 pp
Untitled story
6 pp
Untitled story
10 pp
Untitled Superhero story
10 pp · Superhero
Untitled story
9 pp

ComicBooks.com Value

Our Model is In Beta
Raw (Good) $934
CGC 7.5 · 1 in census $5,159
CGC 7.0 none in existence
CGC 6.5 · 1 in census $3,942
CGC 6.0 · 2 in census $3,548
CGC 5.5 none in existence
CGC 5.0 · 4 in census $2,750
Show all 11 grades
CGC 4.5 · 2 in census $2,635
CGC 4.0 · 1 in census $2,087
CGC 3.5 · 2 in census $2,007
CGC 3.0 · 1 in census $1,625
CGC 2.5 · 1 in census $1,343*
* estimate — limited direct-sales data at this grade
Our model’s value — refined as new sales data arrives · CGC census counts shown where available

Find on

Search eBay for Keen Detective Funnies #23
No confirmed live listings for this exact issue right now — this opens an eBay search.

Read it digitally

Amazon Kindle Buy the digital edition GlobalComix Indie & digital reader
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

Cast · 2 characters

Full credits

artist, inker Harry Sahle
cover pencils, inks Harry Sahle

Reprints

Reprinted in Mr. Monster's Super Duper Special #7 (1987), Gwandanaland Comics #2640 (2020)

Reviews

Reader reviews

No reader reviews yet.