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Mystery in Space #7 cover
Cover: Gil Kane & John Giunta

Mystery in Space #7

Apr 1952 · DC · 0.10 USD
📊 ~20,115 copies sold its debut month
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In "Challenge of the Robot Knight!", science fiction author Sam Waters finds himself mysteriously transported to Venus in the year 3052, where his forgotten story has become a real-life obsession. Venutian gamblers, desperate to predict the outcome of the Interplanetary Olympics, enlist him to help settle their bets—though they don’t know how much his imagination might actually shape the future. Written by Manny Rubin and illustrated with sharp precision by Alex Toth, with inks by Sy Barry and lettering by Gaspar Saladino, this 1952 adventure blends pulp intrigue with early sci-fi wonder. The cover, by Gil Kane and John Giunta, captures the era’s bold, dynamic style.

Contains 4 stories
Challenge of the Robot Knight!
7.67 pp · Science Fiction
R-41Commando LyleOraCommader Artho

In "Challenge of the Robot Knight!" from Mystery in Space #7 (1952), Ora takes a bold step to prove herself by disguising as a robot in order to join the Knights of the Galaxy—a world where her gender might otherwise keep her out. The story follows her as she navigates the rigid ranks of a galactic order, testing her courage and ingenuity in a world that judges by form, not by heart.

The Man Who Weighed 20 Tons!
5.67 pp · Science Fiction
Doctor Harris
The Case of the Counterfeit Humans!
3.75 pp · Science Fiction
Lieutenant Jim BooneCaptain Rale Madden

In "The Case of the Counterfeit Humans!" from Mystery in Space #7 (1952), pilot Boone and co-pilot Madden make an unexpected landing on a mysterious, uncharted world. When Boone ventures out alone, he stumbles upon strange, shapeless beings that quickly shift into perfect duplicates of himself—leaving Madden to unravel the truth before they can escape.

The World Where Dreams Come True!
7.75 pp · Science Fiction
Marty ReedSam WatersVattsThor of SaturnIbis of Mars

In "The World Where Dreams Come True!", Sam Waters, a science fiction writer whose ideas seem plucked from the subconscious, finds himself suddenly transported to Venus in the year 3052—where his forgotten stories have become real. With the final page of one of his tales lost, Venutian gamblers are desperate to learn the outcome of the Interplanetary Olympics, betting fortunes on the unknown result.

ComicBooks.com Value

Our Model is In Beta
Raw (Good) $68
CGC 9.2 · 3 in census $915*
CGC 9.0 · 1 in census $635*
CGC 8.5 · 2 in census $443*
CGC 8.0 · 6 in census $297
CGC 7.5 · 4 in census $279*
CGC 7.0 · 7 in census $232
Show all 16 grades
CGC 6.5 · 3 in census $194*
CGC 6.0 · 2 in census $186
CGC 5.5 · 1 in census $141*
CGC 5.0 · 4 in census $136
CGC 4.5 · 1 in census $115*
CGC 4.0 · 3 in census $100*
CGC 3.5 none in existence
CGC 3.0 · 4 in census $79*
CGC 2.5 · 1 in census $64*
CGC 2.0 · 1 in census $54*
* 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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Raw — NM $2.99 1 listing Raw / ungraded $330 1 listing
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DC Comics - Mystery In Space with Captain Comet #7 $6.25
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Full credits

artist Alex Toth
inker Sy Barry
cover pencils Gil Kane
cover inks John Giunta

Reprints

Reprinted in Five-Score Plus Comic Monthly #23 (1960), DC Special #13 (1971), Strange Adventures #237 (1972), All Star Adventure Comic #77 (1972), DC Super Stars #2 (1976), Hercule #4 (1977), Faucon Noir #12 (1979)

Key issues in Mystery in Space

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