WARNING: This article may contain spoilers for Doctor Who season 12 episode 8. Read at your own risk.

Doctor Who season 12 episode 8 is set to air on BBC later this week, with the title "The Haunting of Villa Diodati." The title alone suggests the episode is full of horror stories rather than being sci-fi. Viewers should be prepared as the upcoming episode sees the origin of Mary Shelley's classic Frankenstein.

In history, Shelley, along with Percy Shelley, Lord Byron, and others in Switzerland ended up creating Frankenstein. But, things will be different in Doctor Who season 12 episode 8. The synopsis notes The Doctor and gang arrived at the Villa Diodati, Lake Geneva, in 1816; the night Frankenstein was created.

The Doctor and the gang visit the Swiss estate on a rainy night, which is the night Frankenstein's classic story was born. So, what would be their mission here? Doctor Who season 12 episode 8 will likely see them take on some ghosts in the era.

While the episode may come with fun and comedic moment, there might be some serious stakes waiting for them. There could be ghosts and other creatures out there that they need to fight and defeat. The episode is also a reminder of how one night can change everything and shape someone's career.

Meanwhile, it's uncertain whether or not Timeless Child or the Lone Cyberman will appear in this episode. Right now, there are no indications they're indeed appearing, but CarterMatt noted the Lone Cyberman will be part of the two-part finale event.

In a related report, Prince of Persia: The Sands of Time star Steve Toussaint and Game of Thrones alum Ian McElhinney are set to appear in the upcoming two-part finale event. Their arrival is likely connected to some of the warnings that The Doctor received from John Barrowman's Captain Jack.

Executive producer Matt Strevens said they were delighted to have Toussaint and McElhinney on board the TARDIS. He said the actors' talent and versatility helped them bring a dramatic conclusion to the season 12 finale. Strevens added the two are fun to work with and he's excited for viewers to see them in action.

Toussaint said he's honored to be part of the series and he had a great time working with the cast. Meanwhile, McElhinney shared he enjoyed his time filming the series and delighted to work with everyone. As of the moment, there are no details about their roles in the season finale.

Doctor Who season 12 episode 8 arrives on Sunday, Feb. 16, on BBC.