Rylan and his celebrity guests explore 120-year-old disused tunnels hidden deep underground in the Kent countryside. There have been sightings of ghostly figures and a phantom black dog here.
| Name | Type | Role | |
|---|---|---|---|
| Rylan Clark | Guest Star | ||
| Alex Gibbs | Guest Star | ||
| Amber Davies | Guest Star | ||
| Jordan Davies | Guest Star | ||
| Charlotte Dawson | Guest Star | ||
| Ashley Buckenham | Guest Star | ||
| Bobby Cole Norris | Guest Star | ||
| Richard Merritt | Director |