Action Comics #446

This April 1975 issue of Action Comics presents one of Clark Kent's most nerve-wracking moments right on the cover: a woman in a trench coat and hat peers around a corner, her thought bubble declaring she's about to discover exactly how Clark Kent contacts Superman — while Superman himself stands just feet away, dramatically tearing open his shirt to reveal the famous "S" symbol. The tension of a secret identity teetering on the edge has rarely been captured so neatly in a single image, with Bob Oksner's cover pencils and inks giving the scene a crisp, street-level urgency. As a bonus, Green Arrow and Black Canary are also featured inside, making this a satisfying package for fans of the broader DC universe.