Janet Suzman

Mother Superior

Jena Malone

Grace

Valerie Sarruf

Female Patient

Godwin To

Patient's Husband

Will Keen

John

Thoren Ferguson

DCI Harris

Alexandra Lewis

Sister Beth

Steffan Cennydd

Michael

Kit Rakusen

Young Michael

Daisy Allen

Young Grace

Eilidh Fisher

Sister Meg

Danny Huston

Father Romero

Marilyn O'Brien

Nurse

Brian Wells

Taxi Driver

Jolade Obasola

Sister Matilda

Ian Pirie

Vincent

Victoria Donovan

Grace's Mother

Shaun Scott

Father Carol