The Doctor tries to prevent Professor Horner from breaking into an ancient barrow near the village of Devil's End. Posing as the village vicar, the Master summons dark forces.
| Name | Type | Role | |
|---|---|---|---|
| Robert Sloman, Barry Letts | Writer | ||
| Rollo Gamble | Guest Star | ||
| Eric Hillyard | Guest Star | ||
| Robin Wentworth | Guest Star | ||
| David Simeon | Guest Star | ||
| James Snell | Guest Star | ||
| Jon Croft | Guest Star | ||
| Christopher Wray | Guest Star | ||
| Christopher Barry | Director |