Lockhart's investigation into a series of daring jewellery thefts is interrupted by a murder.
| Name | Type | Role | |
|---|---|---|---|
| Pamela Conway | Guest Star | ||
| Malcolm Watson | Guest Star | ||
| Joan Lindsay | Guest Star | ||
| George Bolton | Guest Star | ||
| Job Stewart | Guest Star | ||
| Jess Shine | Guest Star | ||
| Frank Seton | Guest Star | ||
| Raymond Marlowe | Guest Star | ||
| Lionel Stephens | Guest Star |