The music under the opening (from the shot of the locomotive to the final exterior in London before the gangsters' first scene) is Eric Coates' 'Knightsbridge March'.
Rene Ray (as Eileen) quotes from "Romeo and Juliet" Act 2 scene 2: "Sleep dwell upon thine eyes, peace in thy breast. Would I were sleep and peace, so sweet to rest."
This movie received its earliest documented U.S. telecasts in Atlanta, Wednesday, January 11, 1950 on WSB (Channel 8), in Chicago, Sunday, January 29, 1950 on WGN (Channel 9), in Cincinnati, Sunday, February 19, 1950 on WLW-T (Channel 4), in Boston, Sunday, March 5, 1950 on WBZ (Channel 4), in Los Angeles, Wednesday, June 28, 1950 on KTSL (Channel 2), and in New York City, Friday, July 21, 1950 on WPIX (Channel 11).