Mannix is the eyewitness of a murder; reportedly, it occurred a year before.
| Name | Type | Role | |
|---|---|---|---|
| Mann Rubin | Writer | ||
| Hildy Brooks | Guest Star | ||
| Joe Hooker | Guest Star | ||
| Grace Albertson | Guest Star | ||
| Laurence Haddon | Guest Star | ||
| Niel Russell | Guest Star | ||
| Kreag Caffey | Guest Star | ||
| Todd Mason | Guest Star | ||
| Henry Olek | Guest Star | ||
| Dean Stockwell | Guest Star | ||
| Shelley Fabares | Guest Star | ||
| Sutton Roley | Director |