Conan the Barbarian (1970) #267
CONAN THE RENEGADE - Part 2 of 4. Conan fights his way out of a web of Kothian intrigue, only to be imprisoned in the dark with a deadly changeling. And Isparana's not far out of the picture. Characters: Conan; Isparana; Amalric; Drusandra; Ariel; Borrin, etc. (villain); Tartus (first appearance; villain).
"The Changeling" is written by Roy Thomas, with art by Mike Docherty and Ricardo Villagran. Cover by Colin MacNeil. (Note: adapted from Leonard Carpenter's TOR novel 'Conan the Renegade.') Cover price $1.25.