Florence Pugh as Katherine Lester

Cosmo Jarvis as Sebastian

Paul Hilton as Alexander Lester

Naomi Ackie as Anna

Christopher Fairbank as Boris Lester

Golda Rosheuvel as Agnes

Anton Palmer as Teddy

Rebecca Manley as Mary

Fleur Houdijk as Tessa

Cliff Burnett as Father Peter

David Kirkbride as Edward

Bill Fellows as Dr. Burdon

Nicholas Lumley as Mr. Robertson

Raymond Finn as Mr. Kirkbride

Ian Conningham as Detective Logan

Finn Burridge as Farmhand #1

Jack Robertson as Farmhand #2

Kema Sikazwe as Farmhand #3

Elliot Sinclair as Farmhand #4

Andrew Davis as Gentleman #1

Alan Billingham as Gentleman #2

Bailey Palmer as Teddy Double