"Fergie" Ferguson  is the tertiary antagonist in the Oscar-winning film Witness.

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Fergie is another corrupt officer who was with James McFee when they were in a restroom at 30th Street Station committing the murder that was eventually witnessed by Samuel Lapp.

In the film later on, he, Paul Schaeffer, and McFee go to the farm where Samuel Lapp is residing with his grandfather. They're there to search for Samuel and kill him. While there, Fergie runs into John Book and tries to shoot him, but he misses. Fergie keeps looking around the farm for Book. Book climbs into a silo and then as soon as Fergie enters, he's locked in. Book then goes ahead and releases a bunch of corn kernels from the silo, which then suffocate him to death.