Susan Foreman, is a mystery to teachers Ian Chesterton and Barbara Wright, seemingly knowing more than she should about the past... and the future. Their curiosity leads them to follow her home one…
Something has caused the TARDIS console to explode in mid-flight, plunging the ship into darkness and rendering the crew unconscious. As they slowly recover, they find themselves suffering from loss…
When the TARDIS malfunctions on the Roof of the World in 1289, the quartet are forced to join the legendary Venetian traveller Marco Polo and his company who are on a journey to Cathay.
The Doctor's…