Una mujer británica rememora su paso de la adolescencia a la vida adulta en los albores de la I Guerra Mundial.
 | Hayley Atwell | Hope |
| Kit Harington | Roland Leighton |
 | Dominic West | Mr. Brittain |
| Alicia Vikander | Vera Brittain |
| Taron Egerton | Edward Brittain |
 | Emily Watson | Mrs. Brittain |
| Colin Morgan | Victor Richardson |
 | Miranda Richardson | Miss Lorimer |
| Anna Chancellor | Mrs. Leighton |
| Joanna Scanlan | Aunt Belle |
| Charlotte Hope | Betty |
| Jonathan Bailey | Geoffrey Thurlow |
| Amanda Fairbank-Hynes | |
| Emily Bevan | Convalescent Nurse |
| Xavier Atkins | Boy on Bicycle |
