Odette Annable as Casey Beldon

Cam Gigandet as Mark Hardigan

Gary Oldman as Rabbi Joseph Sendak

Idris Elba as Arthur Wyndham

James Remar as Gordon Beldon

Ethan Cutkosky as Barto Kozma

Meagan Good as Romy Marshall

Jane Alexander as Sofi Kozma

Carla Gugino as Janet Beldon

Atticus Shaffer as Matty Newton

C.S. Lee as Dr. Lester Caldwell

Rhys Coiro as Mr. Shields

Michael Sassone as Eli Walker

Rachel Brosnahan as Lisa

Craig J. Harris as Rick Hesse

Kymberly Mellen as Gail Newton

Brian Boland as Roger Newton

Roslyn Alexander as Evelyn

Marssie Mencotti as Mrs. Byrne

Braden Moran as Joseph Mengele

Savannah Walker as Young Casey Beldon

Alexis Wade as Young Sofi Kozma

Tom Lowell as Library Patron

Kenya Drew as Student