This was the only episode in the last season of "Out Of The Unknown" to be adapted from a previous story; all the others were original scripts.
This last series of "Out Of The Unknown" appeared after a two-year gap. Producer Alan Bromly was not sanguine in an interview about its future: "When everybody has seen men walking on the moon and sat through a cliffhanger about getting them back alive, then just setting a story somewhere in space is not, you can see, the automatic thrill it once was." (The first moon landing had occurred in the late summer of 1969). Many diehard fans of the series were highly critical of Bromly, but this did prove to be the final season for "Out Of The Unknown".
This story was also adapted for television as an episode of "Out Of This World", televised in June, 1962. Leon Griffiths adapted the story for both versions, though there were certain differences.
This episode was based on one of the several stories Isaac Asimov wrote about Elijah "Lije" Baley, a kind of tough-guy 1940s-style detective operating in the far-off worlds of the distant future with the assistance of an android sidekick, Daneel Olivaw. This was the second time a Baley story had been adapted for BBC-2; in 1964, Asimov's novel, "The Caves Of Steel" had been dramatized for the "Story Parade" series, with Peter Cushing as Baley and John Carson as Daneel.
It is believed that this is the only episode of the third season of "Out Of The Unknown" to be preserved in the BBC Archives.
The character of "Dr. Susan Calvin", the robotics expert, appears in several of Isaac Asimov's stories. Here, she is played by the quite young Wendy Gifford; in the previous season's "The Prophet", she was played by Beatrix Lehmann, who was over thirty years older.
Over twenty years after this episode aired, Robert Sheckley's famous story was (loosely) the basis of a feature film, Freejack, starring Anthony Hopkins and Mick Jagger.
With this episode, Alan Bromly took over from Irene Shubik as series producer. There was a long gap between the second and third series, and Bromley annoyed some long-term devotees of the show by saying that it would now consist of "plays of psychological suspense" rather than of pure science-fiction.
This was the last of the six episodes from Season Two to be repeated on BBC-1 the following year. The BBC-1 repeat went out on May 20th, 1967.
The character of Dr. Susan Calvin, played here by the veteran stage actress Beatrix Lehmann, appears in several Isaac Asimov, another of which, "Liar!", was adapted for the next series, but with a much younger actress, Wendy Gifford, playing the role. Dr. Calvin also turns up in "Little Lost Robot", an episode of the "Out Of This World" series shown on ITV in 1962 (where she was played by Maxine Audley).
This was one of the small number of episodes repeated on BBC-1 the following year, before BBC-2 was widely available in Britain. The BBC-1 repeat went out on April 22nd, 1967.
This is based on yet another of Isaac Asimov's stories featuring the robotics expert, Dr. Susan Calvin. However, perhaps because the series had already featured two stories about Dr. Calvin, with very different actresses playing her, her name was changed here to "Dr. Inge Jensen".
This was one of the small number of episodes to be repeated on BBC-1 the following year, before BBC-2 became widely available. The BBC-1 repeat went out on May 13th, 1967.
This was one of a handful of episodes to be repeated on BBC-1 before BBC-2 became widely available in Britain. The BBC-1 repeat went out on May 6th, 1967.
Although J.B. Priestley did write a handful of original TV plays, this was the only occasion in his long writing career when he adapted someone else's work for an episode of a genre television series.
One of six episodes to be repeated on BBC-1 the following Spring. The BBC-1 showing was on April 29th, 1967.
This episode was shown at the Trieste Science-Fiction Film Festival.
There are no known tapes of this episode still in existence, unfortunately.
E.M. Forster's famous story was first published in a magazine in 1909 and was, its author claimed, written as a reaction to the Utopian science-fiction of his contemporary H.G. Wells. It was not anthologized until 1928.
One of six episodes of this series to be repeated on BBC-1 the following Spring. This wa shown on BBC-1 on 15th April, 1967.