Exclusive Behind-the-Scenes Video: Hannibal's Scary Stag Secret Revealed!

Who would’ve guessed that adding a single instrument to the Hannibal soundtrack could make the NBC drama about 300 percent more creepy?

The dark stag that haunted Will’s subconscious throughout Season 1 was accompanied by a bullroarer, an ancient instrument that “creates this very disturbing, guttural, primal sound,” series creator Bryan Fuller explains in this exclusive, behind-the-scenes Blu-ray clip.

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In other words, bullroarer = the reason you have to keep the lights on when you go to bed on Hannibal nights.

Press PLAY on the video below to hear the spine-chilling effect — you’ll recognize it by the feelings of dread it inspires — and then hit the comments: What do you think was the scariest moment from Hannibal’s first season (which comes out on Blu-ray and DVD on Sept. 24)?

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