Everything there is to know about the "American Horror Story: Hotel" cast had been reported already but this is the first time that fans of the horror thriller TV series will see the full cast in action in a new trailer released just a few days ago.

FX has released a brand-new trailer for the fifth season of its popular horror-thriller show, "American Horror Story." Subtitled "Hotel," the brand-new season has in its center, the pop singer, Lady Gaga, in the role of Hotel Cortez owner, Elizabeth aka The Countess. Just how central her character will be is apparent in the 30-second trailer.

Titled "Hallways," the new trailer goes through the different but equally scary and ghoulish halls of the Hotel Cortez. Each scene shows the different residents and employees serving the immortal, blood-sucking (but NOT a vampire) hotel owner.

The scenes are quick and if viewers blink just for a bit, they'd miss out the cast in action as they only appear briefly.

It opens with a little kid running towards couple Alex (Chloë Sevigny) and Detective John Lowe (Wes Bentley) as the camera follows him and eventually cuts through walls to show different rooms, different scenes, and different characters. Of note is a red room with a sexed-up Ramona Royale (Angela Bassett), a pure white room with "Omen"-like kids jumping up and down the bed, a blood-filled blender, and a mattress with what suspiciously looks like a person sewn into it.

There were also quick glimpses of other characters: the seemingly whacked hypodermic Sally (Sarah Paulson) cutting into the aforementioned mattress, the quiet hotel manager, Iris (Kathy Bates), holding on to the room keys, a pink-suited Donovan (Matt Bomer) holding on to a couple of kids, and an old-ish looking Mr. James March (Evan Peters). Then it ends with fashionable Will Drake (Cheyenne Jackson) and male model, Tristan Duffy (Fin Wittrock), walking alongside a long train of wedding veil (with creepy kids sitting in them) then zooming in to the wedding-ready and certified creepy Lady Gaga. Her dress explains the repetitive "Marry Me" all throughout the clip.

Watch the explosive cast as they explore the chills of Hotel Cortez on "American Horror Story: Hotel" this Oct. 7 on FX.