Uploaded March 2025 | Updated September 2026, 3 weeks ago
The Doctor faces stiff opposition within the British space program when he attempts to investigate some mysterious messages travelling to and from the returning spaceship Mars Probe 7. When the ship's astronauts arrive back home, suspicious circumstances prevent the Doctor from speaking to them, which only makes him more determined to get to the bottom of the matter.
First Broadcast between the 21st March - 2nd May 1970
Starring Jon Pertwee as the Third Doctor alongside Caroline John (Liz Shaw).
For more classic Doctor Who, head to the Doctor Who: Classic YouTube channel: youtube.com/@ClassicDoctorWho
Subscribe to BBC Studios: bit.ly/BBCStudios
Welcome to BBC Studios, bringing you the best of British TV! Here you'll find classic comedy, gripping drama, as well as the best documentaries, science and history! Take a look at complete listings for all our shows - we've got plenty to keep you entertained!
This is a channel from BBC Studios who help fund new BBC programmes. Service information and feedback: bbcstudios.com/contact/contact-us
The Doctor faces stiff opposition within the British space program when he attempts to investigate some mysterious messages travelling to and from the returning spaceship Mars Probe 7. When the ship's astronauts arrive back home, suspicious circumstances prevent the Doctor from speaking to them, which only makes him more determined to get to the bottom of the matter.
First Broadcast between the 21st March - 2nd May 1970
Starring Jon Pertwee as the Third Doctor alongside Caroline John (Liz Shaw).
For more classic Doctor Who, head to the Doctor Who: Classic YouTube channel: youtube.com/@ClassicDoctorWho
Subscribe to BBC Studios: bit.ly/BBCStudios
Welcome to BBC Studios, bringing you the best of British TV! Here you'll find classic comedy, gripping drama, as well as the best documentaries, science and history! Take a look at complete listings for all our shows - we've got plenty to keep you entertained!
This is a channel from BBC Studios who help fund new BBC programmes. Service information and feedback: bbcstudios.com/contact/contact-us
