Alec Guinness and Trevor Howard variously named for role that went to Jack Hawkins; Laurence Harvey originally announced for Maximilian Schell role.
In 1962, Rosalind Russell appeared in movies with both Natalie Wood (Gypsy) and this one with her sister Lana Wood.
The original Broadway production, that this movie was based on, of "Five Finger Exercise" by Peter Shaffer opened at the Music Box Theater in New York on Dec. 2, 1959 and ran for 337 performances.
When Rosalind Russell is in a record store, there is a record cover behind her - it's "Auntie Mame".