The cover explored the tree symbolism in the names of the main characters, Mister Tom Oakley and young William Beech. The oak tree protecting and sheltering the beech sapling becomes a visual metaphor to the role Mister Tom takes as a guardian to Will.
The colour scheme seeks to bring out the sombre tones of the book, themes of loneliness and loss, set during a time of war. However, without losing the hopeful message of a found family, self-discovery and healing, reflected in the warmer tones of the searchlights and the dawn across the horizon.