On-sale date from Comic Reader #99.
Serpe colors suggested by letters page in Our Fighting Forces #159.
Story in 4 chapters: Chapter 1 [no title]; Chapter 2: "The Devil!" (taken to be the overall story title); Chapter 3: "Sacker's Department Store!"; Chapter 4: "Unmasked Terror!"
Letters section includes images from earlier issues. Letters from: Joe Mier, Tony Schooley, Shawn O. Tanner, David Rutman, Casey Duling, George Cooper.