Kathryn Prescott as Katie

Gabriel Basso as Adam

Sean Gunn as Dr. Baker

Jacob Zachar as Clark

Aurelia Scheppers as Megan

Gabrielle Walsh as Jess

Ilya Baskin as Yuri Yegorov

Talitha Eliana Bateman as Kayla

Elaine Kagan as Subject 14

Sonya Eddy as Nurse

Todd Hunter as Pilot

Ivo Nandi as Alexsandr

Sonya Krimsky as Mrs. Baker

Mary Elizabeth Boylan as Dr. Baker's Receptionist

Steve Agee as Kevin

Yar Koosha as Puraj

Madelaine Petsch as Current Girl #2

Brekkan Spens as Camper