Roger, Al and Lester, three former college fraternity brothers want to solve their financial problems by stealing diamonds. During their preparations Lester is shot by a guard. Barnaby is hired by Lester's wife to try and find the missing man. During the investigation, Barnaby and J.R. uncover and foil the plans that Roger and Al have continued with after Lester's death.
| Name | Type | Role | |
|---|---|---|---|
| Gerald Sanford | Writer | ||
| George Ball | Guest Star | ||
| Charlotte Stewart | Guest Star | ||
| Bradford Dillman | Guest Star | ||
| John Ashton | Guest Star | ||
| Ron Masak | Guest Star | ||
| Dan Barton | Guest Star | ||
| John Gilgreen | Guest Star | ||
| Heather Menzies | Guest Star | ||
| Claire Brennan | Guest Star | ||
| Nancy Stephens | Guest Star | ||
| Mel Damski | Director |