Google Play Movies
E1Lethal Dosage
Where to watch
Seasons & Episodes
E1
E2Dangerous Contact
E3Death Shift
E4Deadly Medicine
E5Taste of Poison
E6Seeds of Destruction
E7Toxic Takeover
E8Silent Death
E9Cruel Deception
E10Silent Poison
Cast · Directed by Bertrand Morin
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Diagnosis: Unknown — streaming FAQ
Which OTT platform streams Diagnosis: Unknown?
Diagnosis: Unknown isn't on any subscription service in United States right now, but you can rent or buy it on Google Play Movies. It's not on Netflix.
Is Diagnosis: Unknown on Netflix?
No, Diagnosis: Unknown is not on Netflix in United States as of August 2026. You can rent or buy it on Google Play Movies.
Is Diagnosis: Unknown on Amazon Prime Video?
No, Diagnosis: Unknown isn't on Amazon Prime Video in United States right now.
Where can I watch Diagnosis: Unknown for free?
Diagnosis: Unknown is available to stream free (with ads) on Tubi TV in United States.
How many seasons are in Diagnosis: Unknown?
Diagnosis: Unknown has 2 seasons in total (23 episodes). The series concluded in 2004.
Are all episodes of Diagnosis: Unknown out yet?
Yes — all 23 episodes across 2 seasons of Diagnosis: Unknown are out and available to stream.
Is there a Season 3 of Diagnosis: Unknown?
No — Diagnosis: Unknown ended after 2 seasons, so there is no Season 3.