De pracht van het landgoed Moonacre wordt overschaduwd door herinneringen aan de Maanprinses en het mysterieuze witte paardje. Tot haar verrassing ontdekt Maria Merryweather, een vreemdelinge in het Kasteel van Moonacre, dat wat er al die jaren geleden met de Maanprinses gebeurd is, ook met haar te maken heeft. Ze is vastbesloten vrede en geluk terug te brengen in de vallei. En Maria krijgt meestal haar zin.
Nee, helaas is De maanprinses en het geheim van het witte paard nog niet beschikbaar op Netflix in Nederland.
| Directing | Gábor Csupó | Director |
| Writing | Graham Alborough | Screenplay |
| Writing | Lucy Shuttleworth | Screenplay |
| Production | Meredith Garlick | Producer |
| Art | Sophie Becher | Production Design |
| Production | Monica Penders | Producer |
| Production | Michael Cowan | Producer |
| Production | Samuel Hadida | Producer |
| Production | Jason Piette | Producer |
| Production | David Brown | Executive Producer |
| Production | Simon Crowe | Executive Producer |
| Production | Jennifer Smith | Executive Producer |
| Production | Péter Miskolczi | Co-Producer |
| Production | Celestia Fox | Casting |
| Production | Jim Davey | Associate Producer |
| Production | Victor Hadida | Executive Producer |
| Production | Brian Donovan | Line Producer |
| Production | Kaspar Strandskov | Executive Producer |
| Production | Lucy Shuttleworth | Associate Producer |
| Production | Matthew Joynes | Executive Producer |
| Production | Gábor Váradi | Co-Producer |
| Production | Alex Marshall | Executive Producer |
| Production | Simon Fawcett | Executive Producer |
| Writing | Elizabeth Goudge | Book |
| Sound | Christian Henson | Original Music Composer |
| Camera | David Eggby | Director of Photography |
| Directing | Caroline Sax | Script Supervisor |
| Art | Mónika Esztán | Art Direction |
| Art | Gary Jopling | Art Direction |
| Art | Gabriella Simon | Art Direction |
| Art | Zoltán Horváth | Set Decoration |
| Art | Kay McGlone | Set Decoration |
| Costume & Make-Up | Beatrix Aruna Pasztor | Costume Design |
| Costume & Make-Up | Lynda Armstrong | Makeup Artist |
| Costume & Make-Up | Amy Byrne | Makeup Artist |
| Costume & Make-Up | Nana Fischer | Hairstylist |
| Editing | Julian Rodd | Editor |
| Sound | Peter Gleaves | ADR Mixer |
| Sound | Ruth Sullivan | Foley Artist |
