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Captain America Comics #21 cover
Cover: Syd Shores

Captain America Comics #21

Dec 1942 · Marvel · 0.10 USD
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In "The Creeper and the 3 Rubies of Doom!", young Roddy stumbles upon a mysterious hermit while selling war stamps, only to grow uneasy when the man refuses help despite his apparent poverty. When Roddy’s father offers him a job at the defense plant, the hermit’s sudden hostility raises alarms—especially after he’s caught in a suspicious act, hinting at a dangerous plot. Written by Stan Lee and illustrated by Paul Rico with inks by George Klein, this 1942 issue features a cover by Syd Shores that captures the tension of a wartime mystery.

Contains 5 stories
The Creeper and the 3 Rubies of Doom!
19 pp · Superhero
Sergeant Michael DuffySergeDane the Fifth (Highness of Alslavia)The Creeper [Ambassador John Lissom, aka Lisson] (villain, introduction)Eric (villain)

In "The Creeper and the 3 Rubies of Doom!", the shadowy agent known as the Creeper steals a tri-rubied treaty ring, believing its absence will provoke the last neutral European nation to reject the Allies—just as U.S. ambassador Lissom prepares to sign a pivotal peace treaty. With the fate of the war hanging in the balance, Captain America must race to stop the sabotage before the treaty’s signing becomes a diplomatic disaster.

The Cobra Strikes
9 pp · Superhero
Toroun-named South American AmbassadorThe Cobra (villain, introduction)chauffeur of South American ambassador (villain)

In "The Cobra Strikes," the Torch races into the villain’s lair to rescue the kidnapped South American Ambassador, leaving Toro unconscious and the fate of the ambassador uncertain. With no time to spare, the Torch faces the Cobra and his gang in a high-stakes showdown, determined to bring justice before it’s too late.

Satan and the Sorcerer's Secret!
16 pp · Superhero
Captain America [Steve Rogers]Bucky [Bucky Barnes]JohnnyBalthar (villain, introduction, sorcerer, death)Satan (villain, introduction, possibly the father of Daimon Hellstrom)

In "Satan and the Sorcerer's Secret!" from Captain America Comics #21 (1942), the ancient sorcerer Balthar seeks forbidden knowledge on resurrection at Bald Mountain, only to be confronted by Satan himself, who demands a soul in exchange for his power—offering a twisted challenge: revive Captain America, the world’s greatest champion, so Satan can defeat him and claim victory.

The Sinister Spies
7 pp · Humor
DippySwizzelstick (Dippy's military aide)Mergetroide (Dippy's chauffeur)two un-named spies (villains)

In "The Sinister Spies," Dippy finds himself in the middle of a high-stakes game of golf just before signing a crucial treaty with the United States—unaware that two shadowy spies are lurking, determined to stop him. With the fate of the treaty hanging in the balance, every swing could be his last.

The Case of the Silent Hermit
7 pp · Adventure
The Secret Stamp [Roddy Colt]Mr. ColtMrs. ColtThe Hermit [Mr. Schores] (villain, introduction, a spy)

In "The Case of the Silent Hermit," young Roddy stumbles upon a reclusive hermit struggling to make ends meet, only to find his simple act of kindness quickly tangled in suspicion when the man refuses a job offer from Roddy’s father—despite the family’s defense plant needing workers. When Roddy’s curiosity leads him to investigate further, he’s caught off guard by a shocking revelation from Mr. Schores, who claims he plans to destroy the very plant he’s been offered to work at.

ComicBooks.com Value

Our Model is In Beta
Raw (Good) $767
CGC 9.4 · 1 in census $25,976*
CGC 9.2 · 1 in census $17,549*
CGC 9.0 none in existence
CGC 8.5 · 2 in census $8,502*
CGC 8.0 · 1 in census $6,610
CGC 7.5 · 3 in census $5,352*
Show all 19 grades
CGC 7.0 · 5 in census $4,495*
CGC 6.5 · 8 in census $3,399
CGC 6.0 · 3 in census $3,252
CGC 5.5 · 3 in census $2,482
CGC 5.0 · 4 in census $2,197
CGC 4.5 · 7 in census $2,197
CGC 4.0 · 5 in census $2,197*
CGC 3.5 · 4 in census $2,197
CGC 3.0 · 3 in census $1,370
CGC 2.5 · 3 in census $1,222
CGC 2.0 · 1 in census $1,041*
CGC 1.5 · 2 in census $799*
CGC 1.0 · 2 in census $704
* 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 · 5 characters

Full credits

writer Stan Lee
artist Paul Rico
cover pencils, inks Syd Shores

Reprints

Reprinted in Marvel Masterworks: Golden Age Captain America #6 (2012), Golden Age Captain America Omnibus #2 (2021)

Key issues in Captain America Comics

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