The Lion's Mouth Opens poster
Where to stream

The Lion's Mouth Opens

8.0201428mMovieDocumentary

A documentary on filmmaker Marianna Palka, as she confronts her risk of Huntington's Disease.

DirectorLucy Walker
WriterMarianna Palka
ProducerLucy Walker

Where to watch

Amazon Prime VideoAmazon Prime VideoAmazon Prime Video with AdsAmazon Prime Video with AdsAmazon Prime Video Free with AdsAmazon Prime Video Free with Ads
Availability shown for United States · rights vary by country

Cast · Directed by Lucy Walker

MPMarianna Palka
Marianna Palka
JRJason Ritter
Jason Ritter
BHBryce Dallas Howard
Bryce Dallas Howard
Herself
SGSeth Gabel
Seth Gabel
Himself
MH
Moet Hashimoto
CR
Carly Ritter
MUMichael Uppendahl
Michael Uppendahl
CWChristian Williams
Christian Williams
Himself

More from Marianna Palka · Lead actress

Good Omens
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2017 · 7.3
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Contracted: Phase II
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We Are Boats
We Are Boats
2019 · 5.5
Good Dick
Good Dick
2008 · 5.9
Neds
Neds
2010 · 6.7
Love, Danielle
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2024
Pant Suits
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2015 · 6.0
See all fromMarianna Palka

More from Jason Ritter · Co-star actor

Law & Order: Special Victims Unit
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1999 · 8.0
Lanterns
Lanterns
2026 · 8.3
Law & Order
Law & Order
1990 · 7.3
Person of Interest
Person of Interest
2011 · 8.1
Gravity Falls
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The Last of Us
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Goliath
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2016 · 7.6
Wander Over Yonder
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2013 · 7.5
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More from Lucy Walker · Director

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1999 · 6.6
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Countdown to Zero
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Defying Gravity: The Untold Story of Women's Gymnastics
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Buena Vista Social Club: Adios
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2017 · 7.3
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The Lion's Mouth Opens — streaming FAQ

Which OTT platform streams The Lion's Mouth Opens?

The Lion's Mouth Opens is streaming on Amazon Prime Video and Amazon Prime Video Free in United States, and available to rent or buy on Amazon Video and Google Play Movies. It's not currently on Netflix.

Is The Lion's Mouth Opens on Netflix?

No, The Lion's Mouth Opens is not on Netflix in United States as of September 2026. It's currently on Amazon Prime Video and Amazon Prime Video Free.

Is The Lion's Mouth Opens on Amazon Prime Video?

Yes — The Lion's Mouth Opens is included with an Amazon Prime Video subscription in United States as of September 2026.

Where can I watch The Lion's Mouth Opens for free?

The Lion's Mouth Opens is available to stream free (with ads) on Amazon Prime Video Free in United States.