The Daleks draft the Second Doctor into distilling the Human Factor. Once implanted, it will make the Dalek race invincible. Jamie’s faith in the Doctor is stretched to the limit as the Doctor appears to be collaborating with the Daleks. The Doctor has a few tricks up his sleeve, but then again so might the Daleks.

Lost in a whirlpool of loss and regret, Harry Bradshaw attempts to find innocence.

The Doctor and his friends Ben, Polly and Jamie arrive at Gatwick airport. They quickly stumble upon an alien plot, centring upon the mysterious ‘Chameleon Tours’ - a low-price holiday company, whose young passengers have been vanishing in unexplained circumstances. The Doctor investigates further, but it isn’t long before his own friends start disappearing too.

The Doctor revisits the Himalayas because he wants to return an ancient relic he was given many centuries ago. On arriving however, the Doctor is blamed for a series of brutal murders in the area. Jamie and Victoria discover the true culprits – the previously peaceful Yeti that live in seclusion on the mountainside have apparently turned violent.

Four children try to raise money to replace a broken saw, taking them on an unexpected journey through the capital.

Jamie tries to evade Yeti in the tunnels of the London Underground. Meanwhile, The Doctor and Victoria meet a potential new ally - Colonel Lethbridge-Stewart.

The Doctor and his friends find themselves in the lost city of Atlantis, where the crazed Professor Zaroff has convinced the people of Atlantis that he can raise their sunken city from beneath the sea. However, the Doctor discovers a terrible secret behind Zaroff's plan — a secret that could destroy all life on Earth.

The original 1967 master recordings of ‘The Macra Terror’ were lost soon after the programme’s original transmission. However, audio-only recordings have survived and have been used here to create a brand new fully animated reconstruction of this lost classic.

Behind-the-scenes stories from the long-running sci-fi drama. There are tales of stunts that went dangerously wrong and secrets of how the crew brought monsters to life, as well as revelations about how some storylines proved to be so scary the BBC were forced to re-edit episodes.

A German mercenary is hired to defend the small township of Manchester during the English Civil War.