- After Dietrich "hires" Linda to be his nanny, Linda delivers a voice-over explaining the fortunate circumstances she had stumbled in to - including mentioning that Dietrich frequently entertained guests including Himmler and von Stauffenberg. von Stauffenberg is the officer played by Tom Cruise in Valkyrie.
- A $500,000 building was erected in Berlin, to be blown up during an action scene. No cameras were rolling when it blew up.
- In the living-room, when Linda and her father read a letter from her imperiled aunts and cousin in Berlin, the music on the phonograph is Robert Schumann's "Kinderszenen" (Scenes of Childhood), Opus 15.
- Liam Neeson works with his future sister-in-law, Joely Richardson.
- Many of the lead actors are second-generation members of acting families. Joely Richardson is the daughter of Tony Richardson and Vanessa Redgrave, to whom Liam Neeson is also related by marriage. Michael Douglas is the son of Kirk Douglas. Melanie Griffith is the daughter of Tippi Hedren. John Gielgud is the nephew of theatrical actress Ellen Terry.
- Many of the Nazi SS men in the movie were US soldiers from the Berlin Brigade.
- In Ed Leland's office Linda explains how she comes to know something about spying and refers to a film in which a character's tongue is cut out and says, "Have you seen 'The Fighting 69th'." The "Fighting 69th" was O.S.S. Bill Donovan's regiment in World War One.