A secret, high-technology international agency called SHADO defends Earth from alien invaders.
EPISODE 1
Identified
A wounded alien is captured after a flying saucer is shot down during an attack on a SHADO airborne mission.
EPISODE 2
Exposed
Straker (Ed Bishop) commissions civilian test pilot Paul Foster (Michael Billington) to join SHADO as a colonel in the organization.
EPISODE 3
The Cat with Ten Lives
Aliens land secretly on Earth, hold SHADO pilot Regan's wife hostage, and place him under a hypnotic spell to obey them.
EPISODE 4
Conflict
Foster risks his life and reputation to prove the abundant debris orbiting Earth creates potentially deadly threats to friendly vessels.
EPISODE 5
A Question of Priorities
Straker must choose between risking everyone's life to save his young son, or stopping a downed alien spacecraft.
EPISODE 6
E.S.P.
Straker and Freeman investigate when a UFO smashes into a home, killing the wife of a man who can read minds and predict the future.
Ed Bishop
Dolores Mantez
Michael Billington
George Sewell
Gerry Anderson
Reg Hill
Sylvia Anderson