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.
| Title | Air Date | Duration | ||
|---|---|---|---|---|
| Season 1 | Episode 1 | Matilda | 2018-02-02 | 60 min |
| Season 1 | Episode 2 | The Blue Room | 2018-02-02 | 60 min |
| Season 1 | Episode 3 | The Necklace | 2018-02-02 | 60 min |
| Season 1 | Episode 4 | Blaidd Carreg | 2018-02-02 | 60 min |
| Season 1 | Episode 5 | Bessie | 2018-02-02 | 60 min |
| Season 1 | Episode 6 | Carys | 2018-02-02 | 60 min |
| Production | Susan Breen | Producer |
| Production | Christopher Aird | Executive Producer |
| Production | Willow Grylls | Executive Producer |
| Production | Kris Mrksa | Executive Producer |
| Production | Charles Pattinson | Executive Producer |
| Production | Elaine Pyke | Executive Producer |
| Sound | Dominik Scherrer | Original Music Composer |
| Sound | Natasha Khan | Original Music Composer |
| Art | Cristina Casali | Production Design |
| Art | Zsofia Ekler | Art Direction |
| Art | Guto Humphreys | Art Direction |
| Costume & Make-Up | Helen Tucker | Makeup Designer |
| Costume & Make-Up | Megan Bowes | Makeup Supervisor |
| Costume & Make-Up | Sara Angharad | Makeup Artist |
| Sound | Jens Rosenlund Petersen | Sound Designer |
| Sound | Doug Sinclair | Supervising Sound Editor |
| Visual Effects | Sarah Buisson | Visual Effects |
| Visual Effects | Simon Wilkinson | Visual Effects |
| Camera | Chloë Thomson | Director of Photography |
| Production | Kate Rhodes James | Casting |
| Costume & Make-Up | Helen Tucker | Hair Designer |
| Sound | Paul McFadden | Sound Re-Recording Mixer |
| Sound | Bryn Thomas | Sound Recordist |
| Art | Hannah Nicholson | Set Decoration |
| Visual Effects | Dominic Thomson | Visual Effects Supervisor |
| Costume & Make-Up | Sian Jenkins | Costume Design |
