Amazing Spider-Man #170 (1978)

"Madness is all in the Mind!" Part 2 of 2. Written by Len Wein. Art by Ross Andru, Frank Giacoia and Mike Esposito. Cover by Ross Andru and Frank Giacoia. Dr. Faustus has a new patient! The unwilling Amazing Spider-Man! After the web-slinger is exposed to Faustus' hallucinogenic smoke, he sees frightening apparitions of his enemies attacking! The good doctor quickly helps the wall-crawler recover and then orders Spidey to lead a clandestine mission into a federal research laboratory! Why? Because Dr. Faustus wants to contaminate the nation's supply of flu virus! Once the web-slinger breaks into the biolab, Faustus' triumph appears complete! Will the spectacular one come to his senses in time?

Fine condition.