Dr. Phyllis Thackeray diagnoses the cook at the Barton Ranch with smallpox. All the cowhands may be infected and need to be vaccinated. Dr. Thackeray sends for the one man she thinks can help.
| Name | Type | Role | |
|---|---|---|---|
| Stanley H. Silverman | Writer | ||
| Sam Rolfe | Writer | ||
| Cy Malis | Guest Star | ||
| Grant Withers | Guest Star | ||
| June Lockhart | Guest Star | ||
| Charles Aidman | Guest Star | ||
| John Anderson | Guest Star | ||
| Johnny Western | Guest Star | ||
| Andrew V. McLaglen | Director |