In 1994, a toddler disappeared from a small Welsh village, never to be seen again. 23 years later, in London, the mother of rising cello star Matilda Gray commits suicide, without apparent reason. Among her possessions, Matilda discovers tantalising evidence, linking her mother to the Welsh girl's disappearance all those years ago.
Lydia Wilson
as Matilda Gray
Joel Fry
as Harlan "Hal" Fine
Joanna Scanlan
as Janice Gray
Brendan Coyle
as Stephen Kendrick
Claire Rushbrook
as Rose Morgan
Tara Fitzgerald
as Sylvia Walsh
Clare Calbraith
as PC Graves
Sian Reese-Williams
as Trudy Franken
Sam Hazeldine
as Sean Howell
James Frecheville
as Nick Dean
Richard Harrington
as Aron Morgan
Simon Kunz
as Lloyd Satlow
Episode 1
Episode 2
Episode 3
Episode 4
Episode 5
Episode 6