File It Under G; For Gus

Greetings Ghost Fans,

At the end of the Graveyard scene, guests enter a large crypt where they encounter 3 happy haunts. We have Phineas, Ezra and Gus. While the pasts of Phineas and Ezra are trivial, it appears that Gus was a prisoner who really wanted to find his way out. Attached to his leg is his ball and chain, but what is it in his other hand? Why, his only instrument of freedom, a metal file.