Sam Smith, Kim Petras Bring Satan, Cages and Whips to Grammys in Fiery ‘Unholy’ Performance

Sam Smith and Kim Petras performed their hit song "Unholy" at the Grammy Awards.

The performance was inspired by horror movies.

Smith started the song in red leather, surrounded by dancers reminiscent of Samara from "The Ring."

Petras danced in a cage, surrounded by dominatrices wearing satanic headgear.

Smith wore a satanic top hat and huge flames heated up the stage.

Smith and Petras won the Grammy for Best Pop Duo/Group Performance earlier in the evening.

Petras made an emotional speech, thanking transgender legends who opened doors for her.

Petras is the first transgender woman to win this award.

She dedicated the award to a friend who passed away and always believed in her.

Petras' friend will always be an inspiration in her music.