A priest with a haunted past and a novice on the threshold of her final vows are sent by the Vatican to investigate the death of a young nun in Romania and confront a malevolent force in the form of a demonic nun.
Taissa Farmiga
as Sister Irene
Demián Bichir
as Father Burke
Bonnie Aarons
as The Nun / Valak
Jonas Bloquet
as Maurice Theriault
Ingrid Bisu
as Sister Oana
Patrick Wilson
as Ed Warren
Vera Farmiga
as Lorraine Warren
Lili Taylor
as Carolyn Perron
Charlotte Hope
as Sister Victoria
Sandra Teles
as Sister Ruth
Maria Obretin
as Sister Abigail
August Maturo
as Daniel
