Trivia

Two of the film's main actresses later died at young age. Brittany Murphy (Elisabeth) passed away from pneumonia coupled with anemia and drug intoxication in 2009 at age 32 while Skye McCole Bartusiak (Jessie) suffered an accidental drug overdose at age 21 in 2014.

The famous way Brittany Murphy sings "I'll never tell" was improvised by the actress.

The Canal Street subway station was actually filmed in Toronto's "Bay Lower" unused subway station. $150,000 was spent on set dressing alone. The TTC (Toronto Transit Commission) was so impressed with the New York conversion that they actually requested the set to be left up after filming was completed to attract future filming revenue. The set remained for about three weeks until TTC fire inspectors deemed the set a hazard (steel girders, signs and benches were plastic and wood), so the set was torn down and disposed of.

Skye McCole Bartusiak was particularly proud of the fact that she taught Famke Janssen to play with a GameBoy during shooting. (In the movie, Janssen's character has to play GameBoy.)

Sean Bean actually spoke to Michael Douglas and Famke Janssen on the cell phones during filming.

Amir Mokri: appears as one of the first people Michael Douglas looks at suspiciously after leaving the apartment. As the film's the director of photography, he is fittingly changing a light bulb.