| Person | Type | Job | Role(s) | Episodes |
|---|---|---|---|---|
 Agatha Christie | Crew | Writing | Original Film Writer, Creator | 3 |
 Blair Jollands | Crew | Sound | Sound Designer | 3 |
 Damien Timmer | Crew | Production | Executive Producer | 3 |
Gareth Bull | Crew | Sound | Sound Re-Recording Mixer | 3 |
 Hugh Laurie | Crew | Writing | Writer, Director, Screenplay, Executive Producer, Creator | 3 |
Humphrey Jaeger | Crew | Art | Production Design | 3 |
Ian Farr | Crew | Editing | Editor | 3 |
John de Borman | Crew | Camera | Director of Photography | 3 |
 Karen Lindsay-Stewart | Crew | Production | Casting | 3 |
Mika Orasmaa | Crew | Camera | Director of Photography | 3 |
 Harry Escott | Crew | Sound | Original Music Composer | 3 |
Laura Schalker | Crew | Costume & Make-Up | Makeup & Hair | 3 |
 Claire Jones | Crew | Production | Producer | 3 |
Emily Jacobs | Crew | Production | Casting | 3 |
Julie Davies | Crew | Costume & Make-Up | Makeup Supervisor | 3 |
Laura Smith | Crew | Costume & Make-Up | Costume Design | 3 |
Zak Melemendjian | Crew | Sound | Sound | 3 |
 James Prichard | Crew | Production | Executive Producer | 3 |
Basi Akpabio | Crew | Production | Executive Producer | 3 |
Jon Hollis | Crew | Visual Effects | Visual Effects | 3 |
Sarah Morton | Crew | Sound | Dialogue Editor | 3 |
Gina Cronk | Crew | Production | Executive Producer | 3 |
Helen Ziegler | Crew | Production | Executive Producer | 3 |
Benjamin Darier | Crew | Sound | ADR Mixer | 3 |
Belinda Cottrell | Crew | Editing | Editor | 3 |
