Author Rudyard Kipling and his wife search for their 17-year-old son after he goes missing during WWI.
| Actor | Role |
|---|---|
 Daniel RadcliffeJohn Kipling | John Kipling |
 David HaigRudyard Kipling | Rudyard Kipling |
 Kim CattrallCaroline Kipling | Caroline Kipling |
 Carey MulliganElsie Kipling | Elsie Kipling |
 Julian WadhamKing George V | King George V |
 Robbie KayArthur Relph | Arthur Relph |
 John-Paul MacleodRalph | Ralph |
 Bill MilnerPeter Carter | Peter Carter |
 Michael McElhattonLeo Amery MP | Leo Amery MP |
 Martin McCannBowe | Bowe |
 Brian de SalvoField Marshal 'Bobs' Roberts | Field Marshal 'Bobs' Roberts |
| CCiaran NolanDaly | Daly |
 Laurence KinlanDoyle | Doyle |
 Nick DunningColonel Ferguson | Colonel Ferguson |
 Peter GowenH.A Gwynne | H.A Gwynne |
 Richard DormerCorporal John O'Leary | Corporal John O'Leary |
 Rúaidhrí ConroyMcHugh | McHugh |
 Simon CouryNaval Doctor | Naval Doctor |