Doctor Who: The Sontaran Experiment (1975)

Two years into an intergalactic invasion of Earth, survivors in Sydney, Australia, fight back in a desperate ground war. As casualties mount by the day, the resistance and their unexpected allies, uncover a plot that could see the war come to a decisive end. With the Alien invaders hell-bent on making earth their new home, the race is on to save mankind.

16-year-old Cassie Sullivan tries to survive in a world devastated by the waves of an alien invasion that has already decimated the population and knocked mankind back to the Stone Age.

After being punished for retreat from combat, Ranger David Martel is given command of the Liandra, a haunted 20-year old Minbari fighting ship. He's escorting ambassadors to a secret archaeological site, the oldest city on record and a clue to a dangerous ancient race.

A chief mechanic at a factory, haunted by apocalyptic nightmares, becomes a hero when Earth is invaded by a mysterious army bent on destruction.

A special-ops team is dispatched to fight supernatural beings that have taken over a European city.

In 2047, a group of astronauts are sent to investigate and salvage the starship Event Horizon which disappeared mysteriously seven years before on its maiden voyage. However, it soon becomes evident that something sinister resides in its corridors.

In this epic two-part finale, the Doctor comes face to face with the mysterious Missy, and an impossible choice is looming. With Cybermen on the streets of London, old friends unite against old enemies, and the Doctor takes to the air in a startling new role.

A young man finds out that he holds the key to restoring hope and ensuring survival for the human race, while an alien species called the Drej are bent on mankind's destruction.

In an alternate present, genetically enhanced humans dominate society. Outcasts Leon and Chloe fight for justice against corrupt politicians exploiting genetic disparity, risking everything to challenge the oppressive system.

The two remaining crew members of a mining operation in the Arctic Circle fight to survive against an alien creature.