A haunting ghost story spanning two worlds, two centuries apart. When 13 year old Tolly finds he can mysteriously travel between the two, he begins an adventure that unlocks family secrets laid buried for generations.
| Production | James Spring | Executive Producer |
| Writing | Julian Fellowes | Adaptation |
| Art | Luciana Arrighi | Production Design |
| Writing | Lucy M. Boston | Novel |
| Production | Julian Fellowes | Producer |
| Production | Tim Smith | Executive Producer |
| Sound | Ilan Eshkeri | Original Music Composer |
| Directing | Julian Fellowes | Director |
| Editing | John Wilson | Editor |
| Camera | Alan Almond | Director of Photography |
| Art | Kate Grimble | Art Direction |
| Art | Jo Hawthorne | Construction Manager |
| Sound | Tilo M. Heinrich | Orchestrator |
| Costume & Make-Up | Karen Dawson | Makeup & Hair |
| Visual Effects | Alexander Gunn | Special Effects Supervisor |
| Directing | Melanie Dicks | First Assistant Director |
| Camera | Sean Savage | Camera Operator |
| Art | Ian Whittaker | Set Decoration |
| Costume & Make-Up | Gordon Harmer | Wardrobe Supervisor |
| Editing | Sascha Dhillon | First Assistant Editor |
| Sound | Christoph Bauschinger | Music Editor |
| Costume & Make-Up | Issie Webbly | Makeup & Hair |
| Crew | Linda Deacy | Post Production Supervisor |
| Sound | Steve Little | ADR & Dubbing |
| Production | Gail Stevens | Casting |
| Production | Valentina Coccia | Production Coordinator |
| Art | John Allenby | Property Master |
| Lighting | Ian Barwick | Gaffer |
| Costume & Make-Up | Elaine Carew | Makeup Designer |
| Sound | Richard Straker | Sound Re-Recording Mixer |
| Costume & Make-Up | Jane Robinson | Costume Designer |
| Sound | Gareth Bull | Sound Re-Recording Mixer |
| Sound | Zane Hayward | Supervising Sound Editor |
