The advanced, rather haughty computer concealed behind a bookcase in Gary Seven's New York office, which supplies him with intelligence and controls his equipment during his 1968 mission.
The Beta 5 is a sophisticated computer installed in the Manhattan office used by the agents of an unseen alien civilisation that is guiding Earth through its most dangerous years. It appears in the original series episode Assignment: Earth.
Hidden behind a wall of shelves, the machine speaks in a superior female voice and at first refuses to accept Gary Seven's identity until he proves it. It then reports that the two agents he has come to replace were killed in a road accident.
Seven relies on the Beta 5 to track the orbital weapons platform launched from McKinley Rocket Base and to take over its guidance. Roberta Lincoln, who believes she works for an encyclopedia researcher, is startled to find it answering her.