The San Antonio and San Diego mail route is considered dangerous but driver Silas makes it seem easy. But his good relations with the Indians and his mules is threatened by the Waltons, a desperate couple he encounters on the trail.
| Name | Type | Role | |
|---|---|---|---|
| Pauline Swanson | Writer | ||
| John Pickard | Guest Star | ||
| Frank Gerstle | Guest Star | ||
| Maura Murphy | Guest Star | ||
| Stuart E. McGowan | Director |