Liza Mills, a former student of Barnaby's, asks for help when her father is killed by a snake bite and the suspicion falls on her adopted brother Kevin. Barnaby gains Kevin's confidence and finds out that Liza's fiancé Jim Howard has something to hide.
| Name | Type | Role | |
|---|---|---|---|
| Barry Oringer | Writer | ||
| Priscilla Morrill | Guest Star | ||
| Katherine Justice | Guest Star | ||
| Read Morgan | Guest Star | ||
| Vincent Van Patten | Guest Star | ||
| Arch Johnson | Guest Star | ||
| Ford Rainey | Guest Star | ||
| Andrew Prine | Guest Star | ||
| Walter Grauman | Director |