Siân Heder’s “Being Heumann,” starring Ruth Madeley as Judy Heumann, opens TIFF as a crowd-pleasing Oscar contender for Apple following “CODA.”

In Siân Heder's first movie since "CODA," Ruth Madeley plays the disability-rights leader Judy Heumann like an officious Joan of Arc.

In Siân Heder's first movie since "CODA," Ruth Madeley plays the disability-rights leader Judy Heumann like an officious Joan of Arc.