Doctor Who: The Enemy of the World (1968)

An alien similar to Ra appears out of the Stargate, killing five soldiers and kidnapping another, a year after the original Stargate mission. A new team is assembled, including some old members, and they go in search of the missing soldier in order to find out how Ra could still be alive. Meanwhile, the alien Goa'uld kidnap Sha're and Skaara, implanting them with symbiotes and making them Goa'uld hosts.

The newly-regenerated Doctor arrives in Victorian London, and Clara Oswald struggles to embrace the man he has become. All the while, they reunite with the Paternoster Gang to investigate a series of combustions that have been occurring all around the city.

Tom Merrick gets caught up in a time-traveling conspiracy and must set the timeline right before it is irrevocably altered.

A huge solar flare blasts Mercury out of it's orbit and provides it with an intense magnetic field and it's on collision course for Earth.

A psychiatrist becomes the new Sorcerer Supreme of the Earth in order to battle an evil Sorceress from the past.

Since a bitter winter storm stole the life of Gerda's mother, she and her father have sadly continued to run the remote hotel they call home. Lonely and isolated, Gerda's only joy is Kai, the handsome bellboy. A mysterious guest with an icy stare arrives at the hotel one night, wrapped in fur and diamonds. By daybreak, the "Snow Queen" has vanished with Kai! Gerda embarks on a journey of morphing seasons, fantastical creatures, and long-frozen mysteries in a desperate quest to find her stolen love.

The Seventh Doctor becomes the Eighth. And on the streets of San Francisco – alongside new ally Grace Holloway - he battles the Master.

Meg and Charles Wallace are aided by Calvin and three interesting women in the search for their father who disappeared during a government experiment. Their travels take them around the universe to a place unlike any other.

When disaster hits the Titanic, the Doctor uncovers a threat to the whole human race. Battling alongside aliens, saboteurs, robot Angels and a new friend called Astrid, can he stop the Christmas inferno?

The Doctor and Clara face their Last Christmas. Trapped on an Arctic base, under attack from terrifying creatures, who are you going to call? Santa Claus!