The Lion's Mouth Opens
A documentary on filmmaker Marianna Palka, as she confronts her risk of Huntington's Disease.
- Year: 2014
- Country: United States of America
- Genre: Documentary
- Studio: Tree Tree Tree Productions, HBO Documentary Films
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- Director: Lucy Walker
- Cast: Marianna Palka, Jason Ritter, Bryce Dallas Howard, Seth Gabel, Moet Hashimoto, Carly Ritter