Michael Rennie's first film.
Col. Winstanley, who was obviously meant to be the "old colonel", describes George Fotheringay as being young, but Ralph Richardson, who played him, was 35 years old - 15 years younger than Roland Young, who played Mr. Fotheringay.
Some contemporary reviewers list Gertrude Musgrove in the role of Effie, but she was replaced by Joan Hickson.
The first film of Nigel Stock.
There is a painting over Mr. Maydig's fireplace of the interior of a Greek style palace. Later, Mr. Fotheringay's transformation of Col. Winstanley's house into a palace looks pretty much like the one in the painting.
Torin Thatcher, George Sanders, and Ivan Brandt are Celestial Bodies who appear at the beginning and end of this film.