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Detective Comics #55 cover
Cover: Bob Kane & Jerry Robinson

Detective Comics #55

Sep 1941 · DC · 0.10 USD
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In "The Brain Burglar!", a groundbreaking truth-machine invented by a respected professor falls into the hands of a sinister doctor who uses it to extract secrets from kidnapped scientists, inventors, and Defense Department officials. Written by Bill Finger and brought to life by Bob Kane’s dynamic art and Jerry Robinson’s sharp inks, this 1941 tale of espionage and mind-bending technology stands as a standout early entry in the Batman mythos. The cover, penciled by Kane and inked by Robinson, captures the menace of the unseen criminal with striking precision.

Contains 9 stories
The Brain Burglar!
13 pp · Superhero
Batman [Bruce Wayne] [also as Dr. Mason]Robin [Dick Grayson]Linda PageProfessor Jon Henry (scientist)Professor DodgeDr. Mason (scientsist)Dr. Deker (villain)Deker's gang (villains)un-named Zeppelin Commander (villain, death)Zeppelin crew (villains, all die)

In "The Brain Burglar!", a brilliant professor’s truth-telling machine becomes the target of a sinister doctor who kidnaps top scientists and defense officials, using the device to extract their secrets. With the city’s brightest minds at risk, the hero must track down the thief before the machine’s power is used to unravel national security.

Untitled Adventure story
6 pp · Adventure, Spy
Bart Regan
Dr. Karon
5 pp · Superhero
The Crimson Avenger [Lee Travis] (no cape)Dr. Karon (villain)Wing
The Case of the "Killer Horse"
6 pp · Detective-Mystery
Larry Steele
Murder Without Harmony
6 pp · Detective-Mystery
Speed Saunders
Untitled Humor story
2 pp · Humor, Domestic
MomPop
The Riddle of the Missing Masterpiece
6 pp · Adventure
Cliff CrosbyKay Nevers
Who Killed Hank Allen?
6 pp · Detective-Mystery
Steve Malone
The Gambling Ship
8 pp · Detective-Mystery
Slam BradleyShorty Morgan

ComicBooks.com Value

Our Model is In Beta
Raw (Good) $418
CGC 9.2 · 2 in census $7,012*
CGC 9.0 none in existence
CGC 8.5 · 2 in census $3,027
CGC 8.0 · 3 in census $3,027
CGC 7.5 · 1 in census $2,138*
CGC 7.0 · 4 in census $1,809
Show all 19 grades
CGC 6.5 · 4 in census $1,288
CGC 6.0 · 6 in census $1,288
CGC 5.5 · 10 in census $1,095
CGC 5.0 · 14 in census $955
CGC 4.5 · 9 in census $955
CGC 4.0 · 10 in census $743
CGC 3.5 · 5 in census $650
CGC 3.0 · 5 in census $599
CGC 2.5 · 4 in census $478
CGC 2.0 none in existence
CGC 1.5 · 3 in census $319*
CGC 1.0 · 2 in census $267*
CGC 0.5 · 3 in census $210*
* 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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Cast · 1 character

Full credits

artist Bob Kane
inker, letterer George Roussos
cover pencils Bob Kane
cover inks Jerry Robinson

Reprints

Reprinted in Batman Archives #2 (1991), The Batman Chronicles #4 (2007), Batman: The War Years 1939-1945 #[nn] (2015), Batman: The Golden Age Omnibus #1 (2016), Batman: The Golden Age #2 (2017)

Key issues in Detective Comics

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