The parents of bright and charming Sadie, 7, seek alternatives to the devastating brain procedure doctors propose to treat her frequent seizures.

Day by day, Willie, 46, loses pieces of himself. He has memory loss, seizures, mood swings, a brain lesion -- but no diagnosis. Can the crowd help him?

Six-year-old Kamiyah will suddenly and briefly go limp dozens -- sometimes hundreds -- of times a day. Now the search is on to find others like her.