Successful cellist Matilda Grey puts her career on hold to investigate whether her mother's suicide is connected to the disappearance of a girl from a Welsh village.
Lydia Wilson
Matilda Gray
Joel Fry
Harlan "Hal" Fine
Joanna Scanlan
Janice Gray
Brendan Coyle
Stephen Kendrick
Claire Rushbrook
Rose Morgan
Tara Fitzgerald
Sylvia Walsh
Clare Calbraith
PC Graves
Sian Reese-Williams
Trudy Franken
Sam Hazeldine
Sean Howell
James Frecheville
Nick Dean
Richard Harrington
Aron Morgan
Simon Kunz
Lloyd Satlow
