Fleming and Bridger have discovered that the messages are coming from the constellation Andromeda. With the help of the computer, the scientists end up producing a synthesized living organism. Bridger is soon arrested after it is found out that he was the one selling the secret information, but he ends up escaping.

Professor Dawnay somehow succeeds in making the synthesized creature grow. However, the computer cannot communicate with the creature. Fleming suggests that they find a way to arrange a direct electrical supply between it and the machine.

The computer begins to show just how powerful it is. Even though Fleming warns her to stop, Dawnay continues to use the computer for her experiments, even after it has killed one of her assistants. The final result of the experiment ends up being a female human body, which they all decide to name Andromeda. However, as it begins to grow up it begins to show a startling resemblance to the dead Christine. Soon the Prime Minister has to turn to the computer and Andromeda for help in an escalating international crisis.