A mid-season replacement in early 1997, Buffy the Vampire Slayer quickly established an identity separate from the jokey 1992 feature film that spawned it. An unlikely mixture of action, drama, horror, and comedy, the 7 seasons effectively cross-pollinated The X-Files, Beverly Hills 90210, and Dark Shadows to become a sleeper hit for the fledgling WB network. Series creator Joss Whedon and his writers set out to literalize the idea that high school is hell, examining teenaged angst and sexual awakening through the lens of supernatural metaphor.