The Time Monster

The Master, in the guise of Professor Thascalos, has constructed a device called TOMTIT – Transmission Of Matter Through Interstitial Time – to gain control of Kronos, a creature from outside time. The creature is summoned but proves to be uncontrollable.

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The Mutants

The Time Lords send the Doctor and Jo on a mission to deliver a sealed message pod to an unknown party aboard a Skybase orbiting the planet Solos in the 30th Century. They are caught quickly in a power struggle between the cruel Marshal of Solos and the young Solonian Ky over the future of Solos – a future that hinges on the contents of the message.

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The Sea Devils

The Doctor and Jo visit the Master in his high-security prison on an island off the south coast of England. The governor, Colonel Trenchard, says ships have been disappearing mysteriously at sea. The Doctor discovers that Trenchard and the Master are in league to contact the Sea Devils, a reptilian race in hibernation beneath the sea, who have been awoken by recent work on a sea fort. The Master intends to use his new allies to help him conquer the world.

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The Curse of Peladon

The Doctor and Jo make a test flight in the TARDIS and arrive on the planet Peladon. Seeking shelter, they enter the citadel of the soon-to-be-crowned King Peladon, where the Doctor is mistaken for a human dignitary summoned to act as chairman of a committee assessing an application by the planet to join the Galactic Federation.

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