It was first broadcast in the Teledu Cymru region of the ITV network on Friday 25 January 1963.
ABC Weekend TV, who produced the show for ITV, broadcast it the next day in its own regions.
[1] The episode was directed by Peter Hammond and written by Doreen Montgomery.
[3] The episode was originally intended to introduce the Cathy Gale character.
But after initial production in July 1962, the episode was revamped with various scenes reshot.