1923. In the heart of an old English college, Edward Williams receives an engraving of of an unknown country house with an imposing facade, a sweeping lawn - and, just perhaps, something else.
| Name | Type | Role | |
|---|---|---|---|
| Mark Gatiss | Writer | ||
| Emma Cunniffe | Guest Star | Mrs Filcher | |
| Rory Kinnear | Guest Star | Edward Williams | |
| Nikesh Patel | Guest Star | Nisbet | |
| Robert Bathurst | Guest Star | Garwood | |
| Tommaso Di Vincenzo | Guest Star | The Ghost | |
| Frances Barber | Guest Star | Mrs Ambrigail | |
| John Hopkins | Guest Star | Binks | |
| Mark Gatiss | Director |