Die Schokoladenschnüffler

After reading an article about hypnotic regression, a woman whose maternal grandfather died when she was only three years old contacts the hypnotic subject named in the article believing that he is the reincarnation of her grandfather, and hoping that she can learn the truth about how he died.

In a Mars base, the inhabitants are being infected by a mysterious water creature which takes over its victims. The Doctor is thrust into the middle of this catastrophe, knowing a larger one is waiting around the corner.

An ever evolving alien life-form arrives on a comet from the Dark Gaseous Nebula and proceeds to consume pollution. Spewing mists of sulfuric acid and corrosive sludge, neither humanity nor Godzilla may be able to defeat this toxic menace.

George and Ursula now have a son, George Junior, so Ursula's mother arrives to try and take them back to "civilization".

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.

When a college student witnesses the alleged suicide of her roommate, it sets into motion a series of horrific events that cause her to fear the supernatural entity. As she tries to convince the rest of her dorm that the Boogeyman does exist, the evil force grows stronger and her friends begin to pay the price. Now she must stop this ultimate evil before the entire campus falls prey.

A cardiologist tries to pinpoint the cause of her mother's sudden death, while her sister, a witness, claims malevolent demons are at play.

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!