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She told TV Guide that other popular vampire series such as True Blood and The Vampire Diaries will also be referenced in the instalment, which is provisionally titled 'Live Free or Twi-Hard'.
"We're doing an episode about how vampires pretending to be Edward Cullen or the Salvatore brothers or Bill Compton are bad for you," she explained.
Gamble revealed that the episode will explore the current romantic fascination with vampires, popularised by Twilight and similar brands.
"Chicks are just throwing themselves at them!" she joked. "They think that 'vampire' equals 'I'm not going to try to have sex with you'. They will still take advantage of our children! They will turn you into a vampire or eat you."
Supernatural returns to The CW on September 24.
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