American Horror Story boss Ryan Murphy recent revealed the entire process of casting Lady Gaga for season 5 and teased the role she will play.

Wes Bentley Will Be 'Series Regular' In 'American Horror Story: Hotel'

Murphy spoke with Entertainment Tonight recently about Gaga and why he is hopeful for her in creating a new character.

"Well, I haven't seen her [acting] yet. But she studied acting and I think in many ways that's what she wanted to do first," Murphy noted. "I think she's been looking for some outlet to really dig in there and create a character. I guarantee the role will shock people. What's she's playing."

Connie Britton Admits She 'Would Love' To Return To 'American Horror Story'

The show runner talked about how Gaga nabbed a part in the fifth season, which is titled Hotel. 

"It was just something that she did very, very privately. It was sort of a creative investigation," Murphy said. "I would, out of the blue, get a call from her and they'd say, 'Hold for Gaga'."

There is still no word yet on exactly who Gaga will be playing in Hotel, with cast and crew keeping everything under wraps for now. One thing that is known is that she will be joined by actors Matt Bomer, Cheyenne Jackson and Wes Bentley in the new season.

At the moment, none of the regular stars of American Horror Story have been announced as returning for season 5. This will likely change in the weeks and months to come but it is also possible that the show is truly reinventing itself with a new crop of stars.

American Horror Story: Hotel is expected to air in October on FX, though the network has not yet announced a specific premiere date.

Tags: American Horror Story television fx