"The Enemy Unknown!" Written by Larry Lieber. Pencils by Larry Lieber. Inks by Vince Colletta. It's a flashback story as Peter Parker reflects on a previous adventure when a vengeful youth masqueraded as Spider-Man and committed crimes in order to damage the wall-crawler's reputation. The real Spider-Man finally caught up to the imposter on the Roosevelt Island Tram! 36 pages

Web of Spider-Man 21