Lights! Camera! ...Bloody Pool?
Production is officially underway on the new season of American Horror Story, and anyone who follows Lady Gaga on social media already knows all about it.
Mother Monster posted a series of Instagram shots on Sunday from the set, plus one bizarre beachside image of a pool dyed blood red.
"A bloody pool for the cast," she captioned the photo. "Sorry #AHSfans, there's few pictures. At my parties, killer friends have more fun, when no evidence is left behind."
WATCH: Lady Gaga's 'AHS' Lovers Tell All!
Luckily for us, AHS mastermind Ryan Murphy shed a bit of light on the situation via Twitter.
But this wasn't actually Gaga's first day on set. The 29-year-old did share a new photo of her "Checking In" script, marking the first episode of the new season, but she actually tweeted about her first day of shooting last week.
Gaga also officially changed her name on Instagram to that of her character, The Countess, and updated her bio to read, "Owner of 'Hotel' Cortez in Los Angeles."
WATCH: Lady Gaga's Character Details Revealed for 'AHS: Hotel'
As Murphy previously revealed, Gaga will play a character that owns L.A.'s fictional Hotel Cortez and engages in polyamorous, bi-sexual relationships with Matt Bomer, Angela Bassett and Cheyenne Jackson.
"It's sexier than any season we've done, particularly because of the Gaga of it, so I would say scarier and sexier," he said at FX's TCA panel earlier this month. "By far the most sexy season."
AHS vet Kathy Bates also returns this season and had nothing but kind words for The Countess on Twitter.
Who else is ready to check in?! AHS: Hotel premieres on Oct. 7 on FX. In the meantime, get more scoop on Gaga's character in the video below.