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.
| Writing | Lucy M. Boston | Novel |
| Production | Julian Fellowes | Producer |
| Writing | Julian Fellowes | Adaptation |
| Sound | Ilan Eshkeri | Original Music Composer |
| Production | Tim Smith | Executive Producer |
| Directing | Julian Fellowes | Director |
| Production | James Spring | Executive Producer |
| Art | Luciana Arrighi | Production Design |
| Editing | John Wilson | Editor |
| Camera | Alan Almond | Director of Photography |
| Costume & Make-Up | Issie Webbly | Makeup & Hair |
| Crew | Linda Deacy | Post Production Supervisor |
| Costume & Make-Up | Karen Dawson | Makeup & Hair |
| Sound | Christoph Bauschinger | Music Editor |
| Sound | Tilo M. Heinrich | Orchestrator |
| Sound | Gareth Bull | Sound Re-Recording Mixer |
| Sound | Zane Hayward | Supervising Sound Editor |
| Production | Valentina Coccia | Production Coordinator |
| Camera | Sean Savage | Camera Operator |
| Production | Gail Stevens | Casting |
| Sound | Richard Straker | Sound Re-Recording Mixer |
| Art | Kate Grimble | Art Direction |
| Lighting | Ian Barwick | Gaffer |
| Art | Ian Whittaker | Set Decoration |
| Costume & Make-Up | Elaine Carew | Makeup Designer |
| Art | Jo Hawthorne | Construction Manager |
| Editing | Sascha Dhillon | First Assistant Editor |
| Directing | Melanie Dicks | First Assistant Director |
| Costume & Make-Up | Gordon Harmer | Wardrobe Supervisor |
| Costume & Make-Up | Jane Robinson | Costume Designer |
| Art | John Allenby | Property Master |
| Sound | Steve Little | ADR & Dubbing |
| Visual Effects | Alexander Gunn | Special Effects Supervisor |
