 On June 22, 2017, it was reported that Neve Campbell had signed on to star with Johnson, who plays the head of security for the skyscraper.Maggie Q, Rachel Bilson, Jaimie Alexander and Mira Sorvino were also considered.In July 2017, Chin Han and Pablo Schreiber joined the cast of the film, in August 2017, Byron Mann and Hannah Quinlivan also joined, and a few days later, "Variety" reported that Noah Taylor had also been selected.