Maigret is asked by an old schoolfriend to investigate the murder of his lover.
| Name | Type | Role | |
|---|---|---|---|
| William Humble | Writer | ||
| Alan David | Guest Star | ||
| Betty Marsden | Guest Star | ||
| Peter-Hugo Daly | Guest Star | ||
| Peter Blythe | Guest Star | ||
| Edward Petherbridge | Guest Star | ||
| Barbara Flynn | Guest Star | ||
| Kenneth Haigh | Guest Star | ||
| John Strickland | Director |