Detective Comics #354

From the bold cover by Carmine Infantino and Joe Giella, Batman stands his ground at the center of a tightening ring of fists, surrounded on all sides by a crowd of angry men closing in — a vivid illustration of the cover's own promise of "the Caped Crusader's most dangerous trap." This August 1966 issue also teases the arrival of Dr. Tzin-Tzin, billed right on the cover as Batman's newest arch-villain, giving readers plenty of reason to dive in. It's a wonderfully tense snapshot of the Silver Age at its most kinetic, with writer John Broome and artist Sheldon Moldoff bringing the story "No Exit for Batman!" to life inside.