Trivia

Brad Pitt reportedly left the project after Nicole Kidman dropped out and her replacement had not yet been found. Once Angelina Jolie signed on, he returned to the project.

When Jane is going to her first shown kill, she correctly answers a question from the quiz show Jeopardy! (1984). This was unscripted and spur of the moment on the part of Angelina Jolie.

Brad Pitt left in the middle of shooting for three months to shoot Ocean's Twelve (2004).

Brad Pitt and Angelina Jolie were each paid $20 million for their roles.

In one scene, Benjamin Danz (Adam Brody) is wearing a Fight Club t-shirt while being interrogated by John Smith (Brad Pitt). Pitt starred in Fight Club (1999).

Michelle Monaghan: As Gwen, the electronics specialist, who John hires to examine Jane's laptop.

Simon Kinberg: The film's screenwriter played an investment banker.