Hunter’s archenemy, a Soviet agent and killer known as Bluebird, is suspected of killing an American who betrayed the Soviets after leaking American nuclear secrets to them.
| Name | Type | Role | |
|---|---|---|---|
| Seth Freeman | Writer | ||
| John Karlen | Guest Star | Power plant worker | |
| Lee de Broux | Guest Star | Paul Schiff | |
| Paul Mantee | Guest Star | Lawrence | |
| Del Monroe | Guest Star | Ritchie | |
| Chuck Daniel | Guest Star | Vanover | |
| Edward Mulhare | Guest Star | Colin Berne | |
| Gerald Mayer | Director |