Detective Fitzsimmons, played by Beau Billingslea, is a character in the film Halloween H20: 20 Years Later.
Fitzsimmons is part of the investigating team for the murders of Marion Chambers, her neighbor, Jimmy Howell, and his friend, Tony Allegre. He notes that her office has been ransacked and that Laurie Strode's file is missing.
He tells Detective Matt Sampson that Michael Myers could possibly have been responsible. Sampson scoffs, saying Michael has to be an old man by now. But Fitzsimmons lets Sampson know that Myers is younger than he is.