Overview: The Doctor, Jamie and Victoria arrive on Telos, where an archaeological group are exploring the Tomb of the Cybermen. But are the Cybermen as dormant as they believe?
Overview: The archaeologists learn they are stranded on Telos and Klieg suggests they use the opportunity to explore the Cybermen's tombs.
Overview: The Cybermen have been revived and plan to convert the archeologists into their own kind, prompting Hopper to attempt a rescue.
Overview: Klieg attempts to do a deal with the Cybercontroller while the Doctor tries to find a way to refreeze the Cybermen permanently.
Overview: When the TARDIS materialises in the Himalayas, the Doctor decides to pay a return visit to the nearby Det-Sen monastery only to be accused of murder.
Overview: Jamie and Victoria make their way to the monastery shortly before it is attacked by the Yeti.
Overview: While the Doctor and Jamie return to the TARDIS for equipment, the control sphere Jamie brought to the monastery is reactivated.
Overview: The Yeti escapes from the monastery and Victoria and Thonmi are accused of assisting it, while the Doctor and Jamie endure a perilous journey back across the mountains.
Overview: Victoria falls under the mental influence of Padmasambhva as the Yeti attack in order to drive the monks from the area.
Overview: With the Great Intelligence on the verge of becoming corporeal, the Doctor challenges Padmasambhva to a mental battle in order to defeat it.
Overview: The Doctor, Jamie and Victoria are brought to a base which is attempting to halt the flow of the Second Ice Age.
Overview: Varga revives and takes Victoria hostage as he works to revive his crew while the Doctor and Jamie find Penley stealing medical supplies.
Overview: Jamie and Arden venture out to rescue Victoria only to find the rest of the Ice Warriors are now active.
Overview: The Doctor leaves the base to try and find Jamie and Victoria while Storr tries to do a deal with the Ice Warriors.
Overview: The Doctor and Victoria are both held prisoner by the Ice Warriors as Varga decides to take over Brittanicus.
Overview: The Doctor and Victoria attempt to force the Ice Warriors to surrender control of the ioniser before the ice flow destroys them.
Overview: After the Doctor is attacked by a group of mysterious gunmen, he discovers he is the physical double of the famous scientist Salamander.
Overview: Jamie and Victoria agree to accompany Astrid to Hungary to observe Salamander's activities.
Overview: Jamie and Victoria join Astrid into attempting to rescue Denes but Salamander becomes suspicious of them.
Overview: Fariah brings the Doctor and Kent evidence of Salamander's activities but then they come under attack from Benik.
Overview: The Doctor persuades Bruce to help him infiltrate Salamander's research centre while Salamander takes drastic action to prevent Swann finding out the truth.
Overview: The Doctor discovers the true link between Salamander and Kent while Astrid tries to convince the shelter inhabitants they have been lied to.
Overview: The TARDIS becomes trapped in space before ending up in an underground station of a mysteriously deserted London.
Overview: Jamie and Victoria are reunited with Travers before Jamie joins the soldiers in attempting to find out what has happened to the Doctor.
Overview: The Doctor and Victoria are taken back to the Goodge Street base by Colonel Lethbridge-Stewart where the Doctor becomes convinced there is a traitor in their midst.
Overview: With Travers having been captured by the Yeti, the Doctor attempts to find a way to gain control of the robots while Lethbridge-Stewart tries to recover the TARDIS.
Overview: Victoria and Travers are held prisoner by the Great Intelligence, who is planning to drain the Doctor's mind.
Overview: The Doctor and his friends are held prisoner by the Intelligence and their only hope lies with Jamie, Arnold and a reprogrammed Yeti.
Overview: The Doctor, Jamie and Victoria are taken prisoner by the staff of a gas refinery, who have lost contact with their drilling rigs and experienced mysterious drops in pressure.
Overview: Harris asks for the Doctor's help with Maggie, while Van Lutyens and the Chief Engineer attempt to find out what is blocking the impeller.
Overview: While the Doctor begins his investigation into the weed creatures, Robson is attacked by one at the refinery.
Overview: Van Lutyens' investigation of the base of the impeller places the Doctor and Jamie in danger from the Weed Creature.
Overview: With the Weed Creature poised to burst out of the pipeline and attack the base, an encounter with Oak and Quill gives the Doctor a vital clue about its weakness.
Overview: The Doctor and Jamie rescue Victoria from Robson and realise they can destroy the Weed Creature with sound waves.
Overview: The Doctor and Jamie arrive on a mysterious spacecraft whose only occupant is a dangerous Servo Robot.
Overview: The Doctor and Jamie are brought aboard the Wheel where Jamie is horrified to learn the crew plan to destroy the Silver Carrier with the TARDIS on board.
Overview: Jamie sabotages the Wheel's x-ray laser, unknowingly giving the Cybermen an opportunity to reach the Wheel.
Overview: The Cybermen instruct their human slaves to smuggle them onto the Wheel while the Doctor attempts to convince Bennett of the threat they pose.
Overview: The Cybermen gain control of more members of the Wheel crew and the Doctor realises the only way to stop them is for Jamie and Zoe to make a dangerous space walk.
Overview: Jamie and Zoe attempt to recover the time vector generator while the Cybermen realise the Doctor is on the Wheel and make him their prime target.