Death of Gwen Stacy
Spider-Man's arch foe, The Green Goblin, learned the web-slinger's secret identity and decided to hurt Peter by killing those he loved. The Goblin kidnapped Gwen Stacy and threw her off the Brooklyn Bridge. Though Spider-Man was able to catch her with his web-shooters, the fall had been too much. Gwen Stacy was killed. Overwhelmed by grief, Spider-Man vowed revenge.