Trivia

Is the inspiration for the name of the British band Wayne Fontana and The Mindbenders.

First credited film appearance of Wendy Craig. Her second is The Servant (1963) released later in 1963 which also has in its cast Dirk Bogarde and James Fox (Edward Fox's brother).

The last of more than twenty British films for which French composer Georges Auric wrote the music.

In the U.K. print, top-billed Sir Dirk Bogarde as Dr. Harry Longman does not appear onscreen until the eighteen minutes mark.

This was the last film in which John Clements - who was quite a big star in the late 1930s and early 1940s - received above-the-title billing.