Buffy the Vampire Slayer

Lie to Me (2x7)

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Ford, an old boyfriend of Buffy's comes to Sunnydale and, unknown to her, is part of a secret sect which worships vampires. While the others in the sect are misguided teens who believe that vampires are a higher order of life, Ford has a more sinister reason for his deciet. Because he is going to die soon of cancer, he makes a deal with Spike to hand over Buffy in return for eternal life.