The rape scene had nearly a minute and a half deleted from the final cut of the film before release but was included in later DVD releases. The reasoning for the heavy editing was because Lynne Frederick (who was one of the rape victims in the scene) was only 15 at the time and questions of the usage of a body double for Frederick remains a controversial question to this day.
According to Cornel Wilde , the childbirth scene was real. It was done through the arrangements of a pregnant mother and her husband. Filming the moment took place in a nearby hospital and the props and wardrobe were properly sterilized. All expenses for the production of the scene went to the mother and Cornel Wilde delighted the couple by giving them a 16mm copy of the sequence.
Debut film of Lynne Frederick. She beat out over 200 other girls despite having no previous experience in theater, commercials, or film.
According to actress Wendy Richard, who played a supporting role: "It came from a brilliant book, but Cornel Wilde, God rest his soul, I don't think he did it justice when it came to the screenplay. He seemed to go over the top and get some bits of egg on his face."
Being Lynne Frederick's first film, it was also her first time away from home. Frederick's mother, Iris, personally asked her daughter's older co-star, Wendy Richard, to look over fifteen year old Lynne. In her autobiography, Richard recalled that watching over Lynne was an arduous experience due to Lynne's "headstrong personality".