Captain Marvel [Captain Marvel Adventures] #13
In a standout moment from the classic Captain Marvel Adventures, Billy Batson stumbles upon a surprising connection when a girl he hears on the Station W.H.I.Z. radio show, "The Mental Marvel Quiz," reveals she’s been keeping half of a mysterious locket—one that matches the other half Billy has been carrying. Written by Otto Binder and illustrated by Marc Swayze, this pivotal issue sees Billy’s world shift as a former nurse confirms a long-hidden truth: he and Mary Marvel are twins, a revelation that redefines their bond. The story’s emotional core is brought to life with C. C. Beck’s dynamic cover art, capturing the moment’s quiet wonder.
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Billy accidently discovers that a young girl, appearing on the Station W.H.I.Z. radio show, "The Mental Marvel Quiz," possesses half of a strange locket that he has the other half to, and that her former nurse confirms the fact that Billy and Mary are actually twins!
Plot details indexed by the Grand Comics Database (CC BY-SA).