Spider-Man defeats J. Jonah Jameson's Spider-Slayer and the battles Will-o'-the-Wisp. Dr. Jonas Harrow destroys Will-o'-the-Wisp when he refuses to kill Spider-Man
in Super Spider-Man (Marvel UK, 1976 series) #245 (19 October 1977) [pages 1-10, black and white], #246 (26 October 1977) [pages 11-17, black and white, plus new splash page, original title "Murder on the Wind"]