Issue: #283
Last valuation update: 2026-10-20
Why is Superman palling around with Sherlock Holmes? Why is Supergirl inside somebody's bloodstream? There's only one possible answer - RED KRYPTONITE!
First appearances: Zo-Gar, Jan Dex
Creators: Jerry Siegel, Curt Swan, Stan Kaye, Jim Mooney, Mort Weisinger
Characters: Superman, Lois Lane, Mr. Mxyzptlk, Jimmy Olsen, Supergirl, Perry White, Jonathan Kent, Martha Kent, Edna Danvers, Zo-Gar, Dick Malverne, Jan Dex, Jor-El, Sherlock Holmes, Fred Danvers