The Amazing Spider-Man #093 (1971)
“The Lady and — The Prowler!”
Writer: Stan Lee
Artist: John Romita
After reading about Spider-Man supposedly killing George Stacy, The Prowler thinks that Spider-Man somehow set him up by making him dress up as Spider-Man and visit a party where George Stacy was (issue 87). Spider-Man defeats him and takes him to the hospital. Gwen leaves on a plane for London.