As Newton devotes himself to the difficult and solitary path of challenging the existing view of the universe and proving his own theories on celestial movement and gravity, his young scribe Humphrey wavers between pursuing science or following his heart.
| Actor | Role |
|---|---|
 Kenneth WelshThomas Edison | Thomas Edison |
 Michal SuchánekYoung Jack Maloney | Young Jack Maloney |
 Jesse CollinsJack Maloney | Jack Maloney |
 David StorchWilliam Dickson | William Dickson |
 Susannah HoffmannKate Cruthers | Kate Cruthers |
 James MainprizeEadweard Muybridge | Eadweard Muybridge |