DC Showcase Vol.1 #73
Professor Yatz is kidnapped by "Reds"; Jack Ryder, mouthy TV host, is fired, then hired as a security investigator; He buys odds and ends for a bizarre costume for Devlin's society ball; He's stabbed and thrown in Yatz; Yatz hides his inventions: a molecular transmitter goes in the wound, and a healing serum in his veins.
Printed: Apr 1968
Writers: Steve Ditko and Don Segall
Art: Steve Ditko
Cover: Steve Ditko