Docteur Marcus Welby The Fatal Challenge (1969–1976) Online
- Original Title :
- The Fatal Challenge
- Genre :
- TV Episode / Drama
- Year :
- 1969–1976
- Directror :
- Richard Learman
- Cast :
- Robert Young,James Brolin,Elena Verdugo
- Writer :
- Stephen Kandel,David Victor
- Type :
- TV Episode
- Time :
- 1h
- Rating :
- 6.4/10
Kiley is frustrated by a resident at Lang Memorial's Family Practices Clinic who is prone to making rash and non-medical diagnoses.
| Episode cast overview: | |||
 | Robert Young | - | Dr. Marcus Welby |
 | James Brolin | - | Dr. Steven Kiley |
 | Elena Verdugo | - | Consuelo Lopez |
 | Jess Walton | - | Dr. Janet Oliver |
 | Joe Kapp | - | Frank Gonzalez |
 | Anna Navarro | - | Evalina Gonzalez |
 | Sharon Gless | - | Kathleen Faverty |
| Ketty Lester | - | Thelma Walters |
| Gwenn Mitchell | - | Dr. Jackson |
 | Jason Wingreen | - | Marty Ross |
 | Arthur Space | - | Dr. Olson |
 | Darel Glaser | - | Paul Ross |
 | Judson Pratt | - | Fred Blainey |
| Ross Durfee | - | Goldman |
 | Celia Lovsky | - | Mrs. Krasnow |