Dan Stevens as Father Joseph Steiger

Abigail Cowen as Emma Schmidt

Al Pacino as Father Theophilus Riesinger

Patricia Heaton as Mother Superior

Ashley Greene as Sister Rose

Patrick Fabian as Bishop Edwards

María Camila Giraldo as Sister Camila

Meadow Williams as Sister Sarah

Enrico Natale as Dr. Fabian

Ritchie Montgomery as Chester

Liann Pattison as Sister Antonella

Courtney Rae Allen as Sister Mary Joseph

Emily Brinks as Betty