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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.
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.
Matilda has unsettling encounters with residents of Penllynith and grows increasingly suspicious of Rose, while events in Dean House become evermore sinister.
Matilda's revelation reopens old wounds for the residents of Penllynith, and the Dean family's sinister connections are revealed. Rose is pushed to breaking point.
Matilda starts to piece things together, with help from an unexpected source. Graves investigates the suspicious circumstances surrounding Ewan's death.
Laura warns Matilda that she is in grave danger, as Graves grows suspicious of Aron and Ed, and Hal vows to get to the bottom of things once and for all.
Matilda ignores Sean's advice that she should leave Penllynith, choosing instead to protect Davey.
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