Pauline Johnson did her own stunts when her character climbed out of a carriage and clambered along the outside to reach the locomotive, without using any safety wires or equipment.
Originally made as a silent picture, sound added in March 1930.
Sir Nigel Gresley, chief designer of the LNER's locomotives such as Flying Scotsman, felt that the film portrayed the safety features of his locomotives in a bad light and demanded an on-screen disclaimer "For the purposes of the film dramatic licence has been taken in regard to the safety equipment used on FLYING SCOTSMAN".
Gordon Harker is not credited nor does he appear in this film.
The movie was made to capitalize on the famous train. The mystery writer Freeman Wills Crofts was the technical adviser on the movie, and so much of his knowledge found his way into this movie that he should be regarded by this site as an additional screenwriter.