From Neverpedia

Glenn Close, 2009

Hook as a pirate in

Glenn Close (born March 19, 1947) is an American actress, perhaps best known for her role as deranged stalker Alex Forrest in Fatal Attraction (1987). She has been nominated five times for an Oscar, and has won three Tonys, an Obie, four Emmys, two Golden Globes, and a Screen Actors Guild Award.

But the pinnacle of her professional career was an uncredited cameo as one of Captain Hook's pirates in the movie Hook. In the scene in which Peter Banning first encounters Hook, she is costumed as a male pirate who is confronted by Hook and put in the "boo box" (a locked trunk with scorpions) as punishment for betting that he would fail to kill Peter.

Internet Movie DataBase: Glenn Close