When the Duke of Denver learns his sister's fiancé is a card cheat, the engagement is broken and his subsequent murder's blamed on the Duke.
| Name | Type | Role | |
|---|---|---|---|
| Anthony Steven | Writer | ||
| Dorothy L. Sayers | Writer | ||
| Petronella Ford | Guest Star | ||
| Ivan Beavis | Guest Star | ||
| Anthony Ainley | Guest Star | ||
| John Franklyn-Robbins | Guest Star | ||
| Helen Christie | Guest Star | ||
| Charles Hodgson | Guest Star | ||
| Edwin Brown | Guest Star | ||
| Hugh David | Director |