Dr Harvey, a rural physician, breaks the fourth wall to relate an unusual occurrence that happened in his village.

Dr Harvey recalls that Bill had to start Helen's heart with a device that he attached to the back of her neck, leaving two scars.

[8] Filming over two days of the five-week schedule took place at Lulworth Cove in August 1952 and was photographed by George Douglas for Picture Post.

Dr Harvey and Robin are startled when they discover that the surviving woman cannot recall anything after the duplication and they suppose that she is repressing painful memories, so she may be Dot.

Dr Harvey finds out about the marks on Dot's neck in Bill's notes and tells Robin, convincing him that the survivor is Lena.

"[12] Kine Weekly wrote: "The picture opens with Robin and Bill proving that they can faithfully duplicate anything from rubies to radium, but instead of making something of the epoch-making achievement, it plunges into fabulous romantic pulp fiction.

Barbara Payton displays limited acting ability as Lena and Helen, and Stephen Murray looks worried, and no wonder, as Bill, but John Van Eyssen and James Hayter are reasonably rational in the ticklish roles of Robin and Harvey.

The scientific trappings are elaborate and the explosive climax is a corker, but high-powered presentation fails adequately to atone for its bizarre mumbo-jumbo.

"[13] Variety wrote: "A possible exploitation film, this slow-moving British conception of a horrorific yarn has the added handicap of having no big draw names recognizable by prospective patrons in this country.

Even the attempt to excuse the basic idea (reproducing animals and humans) by sugarcoating with some scientific hocus-pocus is not saved by a somewhat stirring climax.