Begins with :
Amazing Spider-Man # 123 : Written by Gerry Conway and Drawn by Gil Kane Without Gwen in his life, Peter was not the only who greatly missed her. Peter and Gwen's science professor Miles Warren loved her too. But he could not say anything about it, so he just admired her from afar. When she died, hwe sunk into a deep depression, which quickly turned him insane. Influenced by the Daily Bugle, he immediately blamed Spider-Man of her death. Meanwhile, hoping to cause mental trauma to Peter, Norman Osborn found out about an old collegue of his who was doing experiments with clones. The man he was looking for was indeed Miles Warren. Knowing that Miles hated Peter, Norman sought him out for help. Scrier appeared for Osborn and offered to help finance Warren's experiments. Miles accepted. One day, while walking around campus, Warren saw Spider-Man unmasking himself to become Peter Parker. Warren then promised to get vengeance on Peter. Using the hair he collected before, Warren was able to create a clone of Gwen and Peter. While working on that with lab assistant Anthony Serba (who thought they were cloning animals, not humans), Warren killed the disapproving assistant. Since Miles could no longer live with himself, he came up with an alter-ego named the Jackal, a costumed criminal who's main purpose would be to eliminated Spider-Man. Knowing that he needs to replace Serba, Warren hires Seward Trainer, a brilliant scientist, as his assistant. After hearing of Warren's mad plans, Trainer wanted to sabotage the Jackal's experiments, but Scrier prevented him. Fearing for his life, Seward offered to do whatever Scrier would tell him to do. He would essentially act as a spy for Osborn. Spider-Man has had all sorts of new threats entering his life. He would meet the ruthless vigilante named the Punisher who almost manges to defeat him, but Spidey manages to convince the Punisher that he isn't a criminal and that his employer was lying to him. The Punisher's employer was none other than the Jackal. Later on, the Jackal hires another villain named the Grizzly to kill Spidey. Once again, the Jackal's plans fall short. During that time, Harry was thought to have become normal and was allowed to go outside his own room. He moved back into his old apartment with Peter. There Harry had discovered one of Peter's Spidey suits, which confirmed his suspisions that Peter was the Wall Crawler. With that knowledge, a crazed Harry Osborn decides to don the Green Goblin costume and get vengeance on the man who killed his father who he worshipped. The new Goblin didn't fare to well against his former best friend. Spidey defeated an unmaked his foe. After this whole incident, Harry must see a psyciatrist in order to help himself. After that battle, Peter Parker is about to receive the biggest shock of his entire life; the return of Gwen Stacy.Peter was reunited with the woman he loved, or so he thought. Peter didn't question her return, he only wanted to be happy that Gwen was back. Shortly after her return, the Jackal bwould hire yet another villain, this time it was the more capable Tarantula. With the help of fellow Bugle reporter Edward 'Ned' Leeds, Peter tries to solve this case. They even resorted to asking Peter's own teacher some questions. In the end, Peter and Ned found the Tarantula and the Jackal. The Jackal manged to kidnap Ned, thus Peter was able to change into Spider-Man, but he was prepared to receive a huge shock; the Gwen Stacy that had returned was nothing more than a clone, but not only that was learned, the Jackal was none other than Peter's former professor.
After Spidey found out about all of that, he was knocked unconscious. When he woke up, he was in the middle of Shea Stadium and a man in a Spider-Man costume had just woke up right next to him. It was his clone. The Jackal (with the Gwen clone next to him) said that the two Spider-Man had to fight to death in order to save Ned Leeds, who is attached to a bomb. Both Spideys fought for a while, but Gwen convinced Miles to let Ned go unharmed. Miles did that and in the process, let the bomb detonate. There's was an explosion, one Spidey woke up, the other didn't. This Spidey had no idea if he was real or a fake.When the Spider Slayer attacked Spider-Man with robot duplicates of the Kingpin, Sandman and other of Spidey's villains, he only survived because of the love he had for MJ. Thinking that Warren couldn't have duplicated feelings, Spidey thought he was the real thing. He even through away a DNA test that Curt Connors did for him which would have told him the answer he needed. Meanwhile, the Gwen clone decided to leave NYC and make a new life for herself somewhere far away. After that, Spidey found his clone's dead body and through it in a somkestack. What Peter didn't know was that someone took a photograph of Spider-Man doing so. That person would be Harry Osborn.
What really happened was that, on the fateful night at Shea Stadium, Scrier told Seward to make the Jackal believe that the original is the clone, and that the clone is the original. After Peter had put the clone's body in the smokestack, the Jackal took the clone's body and replaced it with a failed clone's skeleton, hoping to cause confusion in the future. The clone would wake up to believe that he is the real thing, but he instead decides to leave NYC and start a new life. He calls himself Ben Reilly. Ben would travel the country, but what he did not know was that a Scrier ordered Seward to follow Ben around and to become a trusted ally of the clone. After that incident, Peter would be rejoiced by the marriage of one of his former girlfriends Betty and fellow Bugle emplyee Ned Leeds, but Peter wouldn't attend another wedding; the one of May and Doctor Octopus. May had inherited an island that contained something that was of interest to Doc Ock. So, Ock planned to marry her and inherit it, but Hammerhead would interfere. The two wouldn't get married, but Ock would end up falling for her and he would miss her for years to come. During this time, Harry was forced to see a psychiatrist named Bart Hamilton with whom he divulged everything about his past (including as the Goblin) and the whereabouts of the Goblin's wharehouses. Hamilton used hypnosis to make Harry forget about his Goblin identity. Hamilton decided to become the third man to be the Green Goblin in order to take over the New York Crime Scene, but when Harry became the Goblin once again, he and Spider-Man defeated Hamilton, who had died in a bomb blast he himslef had set. Harry had suffered amnesia and had forgotten about Peter being Spider-Man and his prior life as the second Green Goblin. In his social life, Peter would have graduated from Empie State University, but he missed one credit, so he had to return in the next semester to graduate. That good ol' Parker luck... Spidey meets another new villain, this time a cat burglar named the Black Cat, who would later play a big role in Peter's life. But at that point Mary Jane was the main woman in his life. He proposed to her, but she declined by saying that she's not a one man woman. She would leave New York for a while, leaving Peter alone once again. A new villain appears, Carrion. Apparently, all he wants to do is kill the Wall-Crawler by using his "death dust"; a special dust that kills whatever it touches. During his fight with the villain, Spidey manages to find out Carrion's identity; the deformed clone of Miles Warren. Spidey ultimately defeated him, but Carrion had died in the process. During this time Peter would think that aunt May had died. Mr. Carradine was released from prison and he wanted to finish off the job he couldn't accomplish a few years earlier. So with help of Quentin Beck (a.k.a. Mysterio), they faked the death of May so they can buy the house from her. Spidey then tracked the burglar to May's house in Forrest Hills where Spidey unmasks himself and gives the burglar a heart attack, which he ends up dying from. Ends with : Amazing Spider-Man # 200 : Written by Marv Wolfman and Drawn by Keith Pollard