Diagnosis: Unknown Facts, FAQ & Common Questions
1960 · CBS · Status: Ended · Rated: TV-PG
Frequently Asked Questions About Diagnosis: Unknown
Direct, verified answers to the most common queries regarding episodes, renewals, watch order, and streaming availability.
How many seasons and episodes does Diagnosis: Unknown have?
Diagnosis: Unknown has 1 season and 9 total episodes, spanning from its premiere on July 5, 1960 to September 20, 1960.
Is Diagnosis: Unknown renewed, ended, or canceled?
Diagnosis: Unknown has concluded its run and is officially ended.
How long does it take to binge watch Diagnosis: Unknown?
It takes 9h 0m (540 minutes) to watch the complete run of Diagnosis: Unknown. At a standard pace of 2 hours per day, you will finish the entire series in approximately 5 days. Yes! At 9 hours total, you can comfortably finish this in a single weekend with about 4.5 hours per day.
Where can you stream or watch Diagnosis: Unknown?
Diagnosis: Unknown is available for streaming on Amazon Prime Video, Amazon Prime Video with Ads, Shout! Factory Amazon Channel. Availability may vary by regional territory, subscription tier, and digital purchase availability.
What is the official age rating for Diagnosis: Unknown?
Diagnosis: Unknown has an official content rating of TV-PG.
Who are the lead actors in Diagnosis: Unknown?
The primary ensemble cast includes Patrick O'Neal as Dr. Daniel Coffee (age 66 (deceased)), Phyllis Newman (age 93), Chester Morris (age 69 (deceased)), Martin Huston.
Ensemble Cast & Current Ages
Lead cast members, their character identities, and current ages calculated from official biographical records:
| Actor | Character | Current Age |
|---|---|---|
| Patrick O'Neal | Dr. Daniel Coffee | 66 (deceased) |
| Phyllis Newman | Main Cast | 93 |
| Chester Morris | Main Cast | 69 (deceased) |
| Martin Huston | Main Cast | – |
| Cal Bellini | Main Cast | – |
| Louis Zorich | Main Cast | 93 (deceased) |
Editorial Verification & Sources
All production facts, air dates, cast credentials, and streaming metadata for Diagnosis: Unknown are compiled from official broadcaster archives, TMDB, and Wikidata records. Last verified on November 6, 2026.