Billie Lourd plays Mallory
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'American Horror Story: Apocalypse': Who Is In The Cast?
7. Billie Lourd plays Mallory
Billie Lourd, who was last seen in AHS: Cult, will be back back on board for another season of 'American Horror Story'. She plays a character called Mallory who ends up working as a servant in the bunker. After a brief altercation with Michael Langdon, it's revealed that Mallory is actually a witch, and part of Cordelia's Coven.