Captain Marvel Adventures #18

In "Captain Marvel Introduces Mary Marvel," Billy Batson stumbles upon a surprising connection when a girl from a radio quiz show reveals she owns half of a mysterious locket—one that matches the one he’s kept all along. With help from her former nurse, Billy begins to piece together a truth that redefines his past: he and Mary are twins, separated long ago. Written by Otto Binder and illustrated by Marc Swayze, this pivotal story unfolds with quiet emotional weight, grounded in the wartime charm of 1942. The cover by C. C. Beck captures the moment with a striking, nostalgic flair.