|Behind the scenes|
- "Ladies and gentlemen, my name is Peter Sadusky. I'm the agent in charge."
- ―Peter Sadusky[src]
Peter Sadusky is the FBI Special Agent in charge of the theft of the Declaration of Independence. The investigation leads him to Benjamin Franklin Gates, who is after the Knights Templar and Freemason treasure.
Being a Freemason himself, Sadusky is intrigued by Gates who gives up the Declaration and leads him to the real mastermind behind the theft: Ian Howe.
Though an antagonist for part of the story, Sadusky eventually becomes Gates's friend at the end of the movie.