Lieutenant Stone and Inspector Keller go after two insurance agents involved in the counterfeiting of an 1850 2 cent purple Guyana stamp which had a value of $250,000 ($1,000,000) in today's market.
| Name | Type | Role | |
|---|---|---|---|
| Robert Holt | Writer | ||
| Earl Holliman | Guest Star | ||
| Richard Derr | Guest Star | ||
| Woodrow Parfrey | Guest Star | ||
| Byron Morrow | Guest Star | ||
| Robert Emhardt | Guest Star | ||
| Byron Chung | Guest Star | ||
| Vince Howard | Guest Star | ||
| Jessica Walter | Guest Star | ||
| Harry Davis | Guest Star | ||
| Seymour Robbie | Director |