A science-fiction thriller in seven episodes by Fred Hoyle and John Elliot.
Starring Esmond Knight and Mary Morris with Peter Halliday, Patricia Kneale, Noel Johnson and introducing Julie Christie

John Fleming and his colleague Dennis Bridger have built a super-computer, to a plan received from outer space, which acts as a means of communication between the source of the message in the constellation of Andromeda and the Earth. With the help of the computer, the scientists produce a synthesised living organism. Bridger, who has been selling information about the project, is arrested, escapes and, after a chase, falls to his death.