When the launch of a mission to Mars goes awry due to sabotage, International Rescue is requested to assist in the mission's second attempt.
Sylvia Anderson
as Lady Penelope Creighton-Ward (voice)
Ray Barrett
as John Tracy / The Hood (voice)
Alexander Davion
as Space Captain Greg Martin (voice)
Peter Dyneley
as Jeff Tracy (voice)
Christine Finn
as Tin-Tin Kyrano (voice)
David Graham
as Gordon Tracy / Brains / Aloysius Parker (voice)
Paul Maxwell
as Captain Paul Travers (voice)
Neil McCallum
as Dr. Ray Pierce (voice)
Bob Monkhouse
as Space Navigator Brad Newman / Swinging Star Compere (voice)
Shane Rimmer
as Scott Tracy (voice)
Charles Tingwell
as Dr. Tony Grant / Angry Young Man / Public Relations Officer (voice)
Jeremy Wilkin
as Virgil Tracy / Space Exploration Center President (voice)
