In a small English village everyone suddenly falls unconscious. When they awake every woman of child bearing age is pregnant. The resulting children have the same strange blond hair, eyes and a strong connection to each other.
George Sanders
as Gordon Zellaby
Barbara Shelley
as Anthea Zellaby
Martin Stephens
as David Zellaby
Michael Gwynn
as Alan Bernard
Laurence Naismith
as Dr. Willers
Richard Warner
as Harrington
Jenny Laird
as Mrs. Harrington
Sarah Long
as Evelyn Harrington
Thomas Heathcote
as James Pawle
Charlotte Mitchell
as Janet Pawle
Pamela Buck
as Milly Hughes
Rosamund Greenwood
as Miss Ogle
