Kathryn Prescott

Katie

Gabriel Basso

Adam

Sean Gunn

Dr. Baker

Jacob Zachar

Clark

Aurelia Scheppers

Megan

Gabrielle Walsh

Jess

Ilya Baskin

Yuri Yegorov

Talitha Eliana Bateman

Kayla

Elaine Kagan

Subject 14

Sonya Eddy

Nurse

Ivo Nandi

Alexsandr

Mary Elizabeth Boylan

Dr. Baker's Receptionist

Steve Agee

Kevin

Madelaine Petsch

Current Girl #2

Brekkan Spens

Camper