Detective Comics #5

From July 1937, Detective Comics #5 delivers a punchy cover by Creig Flessel showing a sharp-dressed detective in a blue suit and red tie landing a solid blow on a rough-looking thug in a red sweater — a dropped knife on the ground making clear just how high the stakes are. The dynamic composition, with both figures caught mid-struggle against a warm amber background, captures the gritty, street-level crime-fighting energy that defined the era. Inside, writer Malcolm Wheeler-Nicholson and artist Sven Elvén take the action in an intriguing direction with "Undercover in Grade School," rounding out a ten-cent package that feels every bit as ambitious as 1937's pulp tradition demanded.