A colleague's death leaves Mannix with the evidence he was murdered for.
| Name | Type | Role | |
|---|---|---|---|
| John Kneubuhl | Writer | ||
| Nolan Leary | Guest Star | ||
| Jay Robinson | Guest Star | ||
| Walter Matthews | Guest Star | ||
| Dana Elcar | Guest Star | ||
| Harry Townes | Guest Star | ||
| Wayne Want | Guest Star | ||
| Robert Pine | Guest Star | ||
| Van Williams | Guest Star | ||
| Seymour Robbie | Director |