Cover: Neal Adams

Detective Comics #398

Apr 1970 · DC · 0.15 USD

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“The Poison-Pen Puzzle!”

In "The Poison-Pen Puzzle!", Dick Grayson attends a science lecture under his civilian identity, only to witness a startling transformation when a lunar rock turns a fellow student green. With mystery swirling around the strange incident, Robin must unravel whether it's a case of alien radiation or a cleverly disguised hoax. Written by Frank Robbins and brought to life with dynamic art by Gil Kane and Vince Colletta, the issue features a striking cover by Neal Adams.

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writer Frank Robbins · artist Gil Kane · inker Vince Colletta · letterer John Costanza · cover Neal Adams

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Full credits

writer Frank Robbins

artist Gil Kane

inker Vince Colletta

letterer John Costanza

cover pencils, inks Neal Adams

Full plot ⚠ may contain spoilers

▸ Reveal full plot — may contain spoilers

While attending a science lecture as Dick Grayson, Robin sees a lunar rock turn another student green. Is it strange radiation from the moon, or a prank?

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