A look into the life of J.K. Rowling in the year leading to her finishing her final Harry Potter book.
| Actor | Role |
|---|---|
| JJames RuncieNarrator / Self | Narrator / Self |
 J.K. RowlingSelf | Self |
| DDianne RowlingSelf | Self |
| CChristopher LittleSelf | Self |
| SSarah BealSelf | Self |
 Stephen FrySelf | Self |
| NNeil MurraySelf | Self |
 Daniel RadcliffeHarry Potter (archival footage) | Harry Potter (archival footage) |
 Adrian RawlinsJames Potter (archival footage) | James Potter (archival footage) |
 Geraldine SomervilleLily Potter (archival footage) | Lily Potter (archival footage) |
 Ralph FiennesVoldemort (archival footage) | Voldemort (archival footage) |