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Showcase #20 cover
Cover: Bob Brown

Showcase #20

May 1959 · DC · 0.10 USD
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“Prisoners of 100 Million B.C.”
★ 1st appearance — Rip Hunter

In "Prisoners of 100 Million B.C.", a group of time-traveling adventurers finds themselves stranded in prehistoric times after a malfunctioning time sphere crashes into the past. With dinosaurs on the move and only limited space in the remaining functional sphere, the travelers must work together to repair their vessel and escape—while grappling with the harsh rule that nothing from the past can be brought back to the present. Written by Dave Wood and illustrated by Ruben Moreira, with a cover by Bob Brown, this 1959 Showcase issue delivers a taut, imaginative adventure from DC's early Silver Age.

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writer Dave Wood · artist, inker Ruben Moreira · cover Bob Brown

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Signed $50 GD $85 CGC 3 $199 VG $300 VG $310 CBCS 5 $320 CGC 5 $424.99 CGC 4 $438.88
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Cast · 2 characters

Full credits

writer Dave Wood
artist, inker Ruben Moreira
cover pencils, inks Bob Brown

Full plot ⚠ may contain spoilers

▸ Reveal full plot — may contain spoilers

As the time travelers return to the sphere, they hear the crooks, who survived the fall and found a sack full of jewels. Since each sphere can only hold 4 people, Bonnie and Corky return to the present in one, while Rip, Jeff, and the crooks head for the disabled sphere, with the pieces necessary for its repair. Once the repairs are made, and the time travelers escape a dinosaur stampede, the sphere heads for its proper time. But home, the crooks find their sack empty, since one of the immutable laws of time travel is that you can't bring anything back with you from the past.

Plot details indexed by the Grand Comics Database (CC BY-SA).

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