Ever wonder how Hollywood creates those spine-chilling sound effects?

Ever wonder how Hollywood creates those spine-chilling sound effects?

From creepy footsteps to the sound of bones breaking, Hollywood's sound effects aren't always what they seem. It's called foley. The CBC's Matt Fratpietro was introduced to the art of foley by Jean Paul DeRoover and Mack Davis over at Blueprints in Thunder Bay, Ont. Here's what he learned about the subtleties of sound creation.