| Name | Character | Episodes |
|---|---|---|
| Gerald McRaney | Dr. Gus Henderson | 3 |
| Aldo Ray | Frederick Thaler | 3 |
| Robert Culp | Anthony Broadhurst | 3 |
| Patty Duke | Cathy Payson | 3 |
| Susan Flannery | Dr. Rebecca Dalton | 3 |
| David Ackroyd | Dr. Mike Rayburn | 3 |
| Sheree North | Lisa Gordon | 3 |
| Kathryn Harrold | Dr. Jill Bates | 3 |
| Stuart Whitman | Dr. Ken Dalton | 3 |
| Tracy Reed | Virginia Tyndall | 3 |
| Maggie Cooper | Priscilla Harper | 3 |
| Gerald S. O'Loughlin | Richard Payson | 3 |
| Laraine Stephens | Dr. Karen Fletcher | 3 |
| Howard McGillin | Dr. Frank Evanhauer | 3 |
| Stewart Moss | Father Hagan | 3 |
| Caroline Smith | Ellen Rayburn | 3 |