PT1. Stu's quest to solve the hit-and-run murder of an art collector's brother takes him to Europe and the Middle East. (Part 1 of 5)
| Name | Type | Role | |
|---|---|---|---|
| Harry Essex | Writer | ||
| Leonid Kinskey | Guest Star | ||
| Walter Friedel | Guest Star | ||
| Robert Boon | Guest Star | ||
| Dorothy Konrad | Guest Star | ||
| Rick Traeger | Guest Star | ||
| Wally Cox | Guest Star | ||
| Keenan Wynn | Guest Star | ||
| Franco Corsaro | Guest Star | ||
| Herbert Marshall | Guest Star | ||
| Lawrence Mann | Guest Star | ||
| Diane McBain | Guest Star | ||
| Ed Wynn | Guest Star | ||
| Charles H. Radilak | Guest Star | ||
| Phil Gordon | Guest Star | ||
| William Shatner | Guest Star | ||
| Richard Conte | Guest Star | ||
| Mario Siletti | Guest Star | ||
| William Conrad | Director |