Season 1
- 1The Message3 Oct 1961
- 2The Machine10 Oct 1961
- 3The Miracle17 Oct 1961
- 4The Monster24 Oct 1961
- 5The Murderer31 Oct 1961
- 6The Face of the Tiger7 Nov 1961
- 7The Last Mystery14 Nov 1961
Set in 1970, a team of scientists decipher a mysterious signal from space and discover that it provides instructions to build a powerful super-computer. Once built, this computer provokes argument between two of leading team members, Fleming and Dawnay, over the machine's real intentions as it provides further instructions to create a living organism, which Dawnay starts to develop. Later it appears to compel lab assistant Christine to commit suicide, and when the organism is fully developed, i…