In October 2016, Chloë Grace Moretz was cast as Patricia Hingle, a student who goes missing from the academy, while Mia Goth was cast as Sara, another one of the academy's dancers.
Pada Oktober 2016, Chloë Grace Moretz memerankan Patricia Hingle, seorang siswi yang hilang dari akademi, manakala Mia Goth memerankan Sara, penari akademi yang lain.