An art dealer asks Diamond to make a clandestine investigation into the disappearance of a valuable crown which vanished from a safe on board a yacht.
| Name | Type | Role | |
|---|---|---|---|
| Gene Levitt | Writer | ||
| Lillian Adams | Guest Star | ||
| Abraham Sofaer | Guest Star | ||
| John Anderson | Guest Star | ||
| Gail Kobe | Guest Star | ||
| Ben Wright | Guest Star | ||
| Barbara Stuart | Guest Star | ||
| Lamont Johnson | Director |