The Sensational Spider-Man #3

A translucent, glowing skeleton dominates this striking 1996 cover — its bones radiating an eerie light against a burst of red and blue energy — while Spider-Man crouches warily to one side and a blond, red-costumed figure reacts with alarm in the lower corner. Dan Jurgens and Klaus Janson set a genuinely unsettling tone with "The Secret of the Skeleton" teaser, kicking off the four-part "Web of Carnage" crossover right here in part one. It's a bold opening image that promises something strange and dangerous lurking at the heart of this story arc.