Ryan Murphy has revealed more details about the highly-anticipated new season of American Horror Story starring Lady Gaga. While on stage in a joint panel for his upcoming series Scream Queens at the 2015 Comic-Con International in San Diego, Murphy teased Gaga's "evil" role and admitted that casting her was "one of the weirdest things" of his career.

Murphy said: "How it happened with Gaga is: she wrote and said 'I love the show, would you consider putting me on?' And I wrote back 'Yes', caps, caps."

"Her schedule was so bananas crazy that she gave us a huge window and she is going to shoot all of her episodes in that window," he continued. "She likes to be sort of doing one thing at the time. So when she is acting with us she is going to be acting. But she has been very collaborative and incredibly fun. You know when you work with somebody like her you sign up for something that is larger than life, and that's what you want. And that has proven to be the case now. You know part of her role involves fashion. You want Lady Gaga to look a certain way so the designers have been coming out of the woodwork making stuff for us. It's been really, really thrilling, people's reaction to her."

Ryan added that Gaga wanted to play someone evil and was "very collaborative and incredibly fun" to work with.

American Horror Story: Hotel begins filming on July 15th in Los Angeles and will debut in October. If you haven't watched the show before, you have plenty of time to get caught up before the new season premieres. Click here to watch American Horror Story for free on Amazon Prime.