No other TV series has been as deeply disturbing or as highly anticipated as the "American Horror Story" anthologies. The series will soon be premiering its fifth installation with "American Horror Story: Hotel," which has been described as being the darkest show to have come out of showrunners, Ryan Murphy and Brad Falchuk.

The two certainly agree with that description and added that "AHS: Hotel" will come full circle and tap into two of the most primal and compelling forces that affect the human psyche, death and sex; two themes that were prevalent on the show's first season, "Murder House."

Murphy also admits that "American Horror Story: Hotel" also taps into one of his fears – the lack of security in hotels. The 49-year-old screenwriter pointed out that hotels are very unsettling as other people have keys to your room and can just come in.

The show has already released several cryptic and dark teaser trailers which really underscore this particular horror, like its scenes of someone looking out of peepholes and seeing a bloodied room or of someone who's still alive and breathing heavily, stitched into a mattress.

Murphy, who's renowned for creating shows like "Glee," also revealed that he has always wanted to do something "bloodier and grislier," which is why the upcoming "American Horror Story" is "straight horror."

To that end, two main villains are set to appear in "American Horror Story: Hotel" - the Ten Commandment Killer and the Addiction Demon.

As the name implies, the Ten Commandment Killer murders his victims according to what is dictated in the bible, bringing to mind Kevin Spacey's character in the cult classic, "Se7en."

On the other hand, the Addiction Demon is a more disconcerting creature as it's said to be addiction made flesh.

"[The Addiction Demon] is a representation of what people go through fighting addiction," Murphy explains. "It's not done lightly or blithely."

There's certainly nothing light about this antagonist whose eyes and mouth appear to be covered with a thin film of skin and who has claw-like hands. Murphy had previously teased that this villain will be showcased in "the most disturbing scene" that the show has ever done.

"American Horror Story: Hotel" is set to premiere on Oct. 7 on FX.