A ruthless imposter masquerades as Relic, with an identical jet-boat. Relic is blamed for a series of increasingly impudent crimes until Gus and Margaret finger the Imposter, and the two jet-boats clash head-on in a ferocious dog-fight to the death.
| Name | Type | Role | |
|---|---|---|---|
| Ed McNamara | Guest Star | ||
| Barbara Tremain | Guest Star | ||
| John Nevette | Guest Star |