Halloween is synonymous with scary monster movies and spooky sounds. But most of the time those “spooky sounds” are created using everyday objects. We’ll run back our visit with Washington University’s Deirdre Maitre, who takes us behind the scenes of the invisible world of foley art.

Explore more:

• Politically Speaking episodes with Ann Wagner, Fred Wellman
• How Foley artists transform watermelons into a chorus of feasting zombies in horror films