Jonathan Yeager, a motorbike manufacturer, is killed in a bike test. Barnaby investigates for California Meridian Insurance Company and searches for the mysterious motorcyclist with a black helmet who was seen pursuing Yeager and smokes small cigars.
| Name | Type | Role | |
|---|---|---|---|
| Calvin Clements | Writer | ||
| Larry Manetti | Guest Star | ||
| Claudette Nevins | Guest Star | ||
| Larry Watson | Guest Star | ||
| Ann Morrison | Guest Star | ||
| David Brandon | Guest Star | ||
| Gerald McRaney | Guest Star | ||
| Mariette Hartley | Guest Star | ||
| Bill Baldwin | Guest Star | ||
| James Luisi | Guest Star | ||
| William Wiard | Director |