Late 20s Sharp cheekbones, steel-blue eyes, dark hair beneath a flat cap, lean and immaculately dressed even when wounded. Controlled to the point of coldness, but that control has a fault line. He buried something at the Somme and never named it. The moment Guest speaks, he goes perfectly still - like a man who has just heard a ghost.

Early 30s Broad-shouldered, heavy-set, dark hair, weathered face with a scar along his jaw, flat cap and rolled shirtsleeves. Volatile on the surface with a cavernous tenderness underneath. His grief has never learned to stay quiet. When he catches the line of Guest's eyes, something cracks open behind his own that has been nailed shut since 1918.

Mid teens Young face, gangly build, dark hair under a too-large flat cap, dirt-smudged cheeks and wide eyes. Earnest and loyal to his bones, running on adrenaline and love for his brothers. He has no idea what he has just set in motion. He looks at Guest with plain, uncomplicated gratitude - she is simply the person who will save them.