Tubi TV
E1
The Case of the Radiant Wine
Where to watch
Seasons & Episodes
E2
Main Course - Murder
E3
A Sudden Stillness
E4
Final Performance
E5
The Case Of The Elder
E6
The Curse Of The Gypsy
E7
Gina, Gina
E8
The Parasite
E9
The Red Death
Cast
More from Patrick O'Neal · Lead actor
More from Phyllis Newman · Co-star actress
Murder, She Wrote
1984 · 7.5
The Wild Wild West
1965 · 7.6
Quincy, M.E.
1976 · 7.5
Robert Montgomery Presents
1950 · 6.0
The Equalizer
1985 · 7.1
Kraft Television Theatre
1947 · 7.8
Burke's Law
1963 · 6.3
thirtysomething
1987 · 6.3
The United States Steel Hour
1953 · 6.3
The Man from U.N.C.L.E.
1964 · 7.2
See all fromPhyllis Newman
More like this
The First 48
2004 · 7.9
Forensic Files
1996 · 7.9
Snapped
2004 · 7.8
Cold Case Files
1999 · 8.4
People Magazine Investigates
2016 · 8.6
American Monster
2016 · 7.4
A Haunting
2005 · 7.5
Rescue 911
1989 · 7.9
Fear Thy Neighbor
2014 · 8.0
Roman Empire
2016 · 6.9
Wild Crime
2021 · 6.4
Who Killed Jill Dando?
2023 · 6.7
Diagnosis: Unknown — streaming FAQ
Which OTT platform streams Diagnosis: Unknown?
Diagnosis: Unknown is streaming on Tubi TV in Canada. It's not currently on Netflix.
Is Diagnosis: Unknown on Netflix?
No, Diagnosis: Unknown is not on Netflix in Canada as of September 2026. It's currently on Tubi TV.
Is Diagnosis: Unknown on Amazon Prime Video?
No, Diagnosis: Unknown isn't on Amazon Prime Video in Canada right now. It's on Tubi TV instead.
Where can I watch Diagnosis: Unknown for free?
Diagnosis: Unknown is available to stream free (with ads) on Tubi TV in Canada.
How many seasons are in Diagnosis: Unknown?
Diagnosis: Unknown has 1 season in total (9 episodes). The series concluded in 1960.
Are all episodes of Diagnosis: Unknown out yet?
Yes — all 9 episodes across 1 season of Diagnosis: Unknown are out and available to stream.
Is there a Season 2 of Diagnosis: Unknown?
No — Diagnosis: Unknown ended after 1 season, so there is no Season 2.
