Warren Christie, manager of a jewelry store, steals several diamonds to ransom his abducted wife but when Stan Donaldson tries to deliver the gems they are robbed. Barnaby investigates for the insurance company and offers his help for a second delivery.
| Name | Type | Role | |
|---|---|---|---|
| Gerald Sanford | Writer | ||
| Carl Weintraub | Guest Star | ||
| Rozelle Gayle | Guest Star | ||
| Sharon Thomas | Guest Star | ||
| Byron Morrow | Guest Star | ||
| Doug Hume | Guest Star | ||
| Gayle Gannes | Guest Star | ||
| Dennis Patrick | Guest Star | ||
| Chip Hurd | Guest Star | ||
| Sam Weisman | Guest Star | ||
| Fawne Harriman | Guest Star | ||
| Darrell Fetty | Guest Star | ||
| Vincent Baggetta | Guest Star | ||
| Felton Perry | Guest Star | ||
| Jim Bohan | Guest Star | ||
| Walter Grauman | Director |