When Kathryn Leigh Scott's husband was diagnosed with progressive supranuclear palsy (PSP), a neurological disease for which there is (so far) no cure, it was a devastating time for both of them, not least because so little is known about the cause or treatment of a disease that affects some 20,000 Americans, a number similar to that of Lou Gehrig's disease (ALS).Last Dance at the Savoy is both a personal story about Scott's husband,...