A sort documentary film. Biologist Julian Huxley, brother of Brave New World author Aldous, gives a chilling insight into the discredited science of coercive eugenics. Huxley compares the genetics of families of 'defectives' who are institutionalised with those of successful actors (including John Gielgud) and the physically strong. He concludes that it would be better if disabled people were not born. Shortly after this film was made, Hitler authorised the mass murder of disabled Germans.