Deafblind Helen Keller learned to communicate with the world through her teacher Annie Sullivan. The Miracle Continues follows Helen through her youth and early adulthood – from her school days at the Perkins Institute to her academic career at Radcliffe College to her first public appearances as an author and activist.
| Actor | Role |
|---|---|
 Blythe DannerAnne Sullivan | Anne Sullivan |
 Mare WinninghamHelen Keller | Helen Keller |
 Perry KingJohn Macy | John Macy |
 Vera MilesKate Keller | Kate Keller |
 Jack WardenMark Twain | Mark Twain |
 Peter CushingProfessor Charles Copeland | Professor Charles Copeland |
 Alexander KnoxMr. Gilman | Mr. Gilman |
 Jeff HardingPeter Fagan | Peter Fagan |
| SSarah KellerHelen Myers | Helen Myers |
 Alan TilvernWilliam Alexander | William Alexander |