 Nigel HaversSelf - Narrator (voice) | Self - Narrator (voice) |
 Agatha ChristieSelf - Writer (archive footage) | Self - Writer (archive footage) |
 Samantha BondSelf - Actor | Self - Actor |
 Sheila AtimSelf - Actor | Self - Actor |
 Philip JacksonSelf - Inspector Japp, ITV's Poirot | Self - Inspector Japp, ITV's Poirot |
 Hugh FraserSelf - Lt. Hastings, ITV's Poirot | Self - Lt. Hastings, ITV's Poirot |
 Anthony HorowitzSelf - Screenwriter and Author | Self - Screenwriter and Author |
 James PrichardSelf - Agatha Christie's great grandson | Self - Agatha Christie's great grandson |
 Amanda AbbingtonSelf - Actor | Self - Actor |
 Damien TimmerSelf - Executive Producer, Agatha Christie adaptations | Self - Executive Producer, Agatha Christie adaptations |
 Mark AldridgeSelf - Author | Self - Author |
 Laura ThompsonSelf - Agatha Christie's Biographer | Self - Agatha Christie's Biographer |
 Sophie HannahSelf - Author, Poirot Sequels | Self - Author, Poirot Sequels |
| JJohn RisdonSelf - Torquay Historian | Self - Torquay Historian |
| BBasi AkpabioSelf - Creative Director, Agatha Christie Ltd | Self - Creative Director, Agatha Christie Ltd |
| BBelinda SmithSelf - Agatha Christie's home, Greenway | Self - Agatha Christie's home, Greenway |
