When amateur historian Catherine Corless begins examining records from a former Mother and Baby Home in Tuam, Co. Galway, she stumbles upon evidence pointing towards a deeply troubling past. Refusing to let the questions go, she embarks on a painstaking investigation, putting her in conflict with the Church, State, and local town. As official resistance mounts, and unsettling discoveries emerge, her determination challenges powerful institutions, exposing a hidden chapter of Ireland's past that many would rather keep hidden.

Monica Dolan
as Catherine Corless

Andrew Bennett
as

Ian McElhinney
as

Ian Dillon
as Funeral Attendee (uncredited)

Thomas Hopkins
as Old Man

Ruth McCabe
as

Elaine O'Dwyer
as Alicia Corless

Jonathan Heed
as Reporter

Jeanne Nicole Ní Áinle
as

Patrick O'Donnell
as Franny Hopkins