Taylor Schilling as Sarah Blume

Jackson Robert Scott as Miles Blume

Colm Feore as Arthur Jacobson

Brittany Allen as Margaret St. James

Peter Mooney as John Blume

Oluniké Adeliyi as Rebecca

Elisa Moolecherry as Zoe

Paula Boudreau as Dr. Elaine Strasser

Paul Fauteux as Edward Scarka

David Kohlsmith as Miles (5 Years Old)

Ashley Black as Hailey

Martha Girvin as Miles' Foster Mom

Andrew MacDonald as Miles (8 Years Old)

Alexander Campos as Miles (2 Years Old)

Chris Scian as Christopher

Ava Augustin as Penmark Student

Olivia Croft as CPS Officer

Mark Sparks as Lead Officer

Michael Dyson as Farmer

Brock Johnson as Pawn Shop Owner

Grace Armas as Exam Room Nurse

Milton Barnes as Intensive Care Doctor

Jim Annan as Buchanan Teacher

Tristan Vasquez as Dash

Byron Abalos as Penmark Instructor

Martin Roach as Dr. Kagan

Janet Land as Sarah's Mother

Nicholas McCarthy as Penmark supervisor