The Lion's Mouth Opens is a 2014 short documentary film. It follows actress and filmmaker Marianna Palka as she pursues testing to learn whether she inherited the genetic mutation that causes Huntington's disease, an incurable neurodegenerative disease.

Plot

The film begins at a dinner party. Filmmaker and actress Marianna Palka, 33 years old, is joined by friends in anticipation of the genetic testing results she will receive the next day, revealing whether or not she has inherited the presently untreatable neurodegenerative illness, Huntington's disease, from her father, who has the illness.