In an attempt to pull her family together, Adèlle travels with her young daughter Sarah to Wales to visit her father. The morning after they arrive, Sarah mysteriously vanishes in the ocean. Not long after, a little girl bearing a striking resemblance to their missing daughter reveals that she has retuned from the dead — and that Sarah has been taken to the Welsh underworld.
Maria Bello
as Adèlle
Sean Bean
as James
Abigail Stone
as Ebrill
Richard Elfyn
as Rowan
Maurice Roëves
as Dafydd
Sophie Stuckey
as Sarah
Casper Harvey
as Young Dafydd
Eluned Jones
as Doctor
Gwenyth Petty
as Librarian
Robin Griffith
as Police Inspector
Tonya Smith
as Main Stumblehead Martyr
