Mysterious financial losses lead the Post Office to sack and prosecute village subpostmasters who have no way to prove their innocence.
| Name | Type | Role | |
|---|---|---|---|
| Gwyneth Hughes | Writer | ||
| Sophie Duval | Guest Star | Anne Chambers | |
| Kai Owen | Guest Star | Retail Manager | |
| Conor Mullen | Guest Star | David Hamilton | |
| Albert Welling | Guest Star | Judge Harvey | |
| Dewi Wykes | Guest Star | Police Constable | |
| Matilda Firth | Guest Star | Millie-Jo Castleton | |
| Daniel Hill | Guest Star | Judge Hooton | |
| Annie Hulley | Guest Star | Reverend Jane | |
| Alec Nicholls | Guest Star | Ryan Fleming | |
| Amy Cudden | Guest Star | Issy Hogg | |
| Ifan Huw Dafydd | Guest Star | Noel Thomas | |
| Susan Brown | Guest Star | Min Howard | |
| James Strong | Director |