Lady Gaga showed off her steamy side and killed her lover in Episode 6 of "American Horror Story: Hotel" on Wednesday.

The 29-year-old singer, who plays The Countess on the FX series, striped down to her lingerie and slaughtered her model love interest, Tristan Duffy, played by Finn Wittrock, according to the Daily Mail.

The seductive scene started off with The Countess luring hotel boss Will Drake, played by Cheyenne Jackson, into her bed. In stills from Wednesday night's episode, Mother Monster is seen wearing green underwear and diamonds, while Jackson lies butt naked on the bed.

When Duffy walked in to find the two together, The Countess proceeded to slash his throat open, leaving him dead on the floor. The Countess is in love with Liz Taylor, played by Denis O'Hare, but Taylor's interests lay elsewhere. Taylor had pleaded with The Countess to let her be in a relationship with Duffy, but Gaga's character assured Taylor she was unwilling to share.

Another surprising moment on this week's episode was the discovery of the tenant in Room 33 at the Hotel Cortez: The Countess' secret deformed vampire baby.

A flashback sequence showed The Countess arriving at a Los Angeles mansion in 1926, the same haunted house from Season 1, "American Horror Story: Murder House."

She had gone to the house to see if she could have an abortion, telling the doctor she was only three weeks pregnant, yet her stomach was quite large. The doctor took her down to the basement and performed the surgery to extract the child, a baby boy. But, once out of the womb, the child attacked and killed the nurse.

Gaga made her debut on "American Horror Story: Hotel," which was created by Ryan Murphy and Brad Falchuk, on Wednesday, Oct. 7.

Additional cast members for this season include Kathy Bates, Matt Bomer, Sarah Paulson, Wes Bentley, Angela Bassett, Max Greenfield, Evan Peters, Lily Rabe and Darren Criss.

"American Horror Story: Hotel" airs on FX on Wednesdays at 10 p.m. ET.