Gray Matter
In the spring of 2002, filmmaker Joe Berlinger traveled to Vienna to witness the burial of the preserved brains of over 700 children killed at a Nazi "euthanasia" clinic. GRAY MATTER chronicles the filmmaker's personal journey as he searches for Dr. Heinrich Gross -- known as the "Austrian Dr. Mengele" -- who allegedly participated in these killings. Along the way Berlinger meets survivors of the clinic, as well as other remarkable individuals, who are confronting a nation that has only begun to grapple with its denial of this horrific legacy.
Top cast
Below are the streaming services currently carrying the movie “Gray Matter” in Canada, along with how each offers it (subscription, buy, or rent) and a direct link. Licensing differs by market, so availability in Canada can differ from other countries.
Where to watch Gray Matter in Canada
- Type
- —
- Starts
- Not available
- Ends
- Not available
- Category
- Not available
- Type
- —
- Starts
- Not available
- Ends
- Not available
- Category
- Not available
- Type
- —
- Starts
- Not available
- Ends
- Not available
- Category
- Not available
- Type
- —
- Starts
- Not available
- Ends
- Not available
- Category
- Not available
- Type
- —
- Starts
- Not available
- Ends
- Not available
- Category
- Not available
- Type
- —
- Starts
- Not available
- Ends
- Not available
- Category
- Not available
- Type
- —
- Starts
- Not available
- Ends
- Not available
- Category
- Not available
- Type
- —
- Starts
- Not available
- Ends
- Not available
- Category
- Not available
Not currently available on the supported providers in Canada.
Availability can change as licenses rotate — confirm on the provider’s page before subscribing. Last checked: 14 Sept 2026.