Adam Johnstone's Son explores the delicate balance between innocence and the harsh realities of adult relationships. The novel begins with a mother and daughter recovering from past loss, focusing on the emotional complexities that come with grief, memory, and social interactions. As the characters navigate their evolving relationships, the story examines the contrast between youthful idealism and the complicated dynamics of love and trust. The arrival of guests disrupts their peaceful life, with the young woman, Clare, becoming more aware of adult complexities, especially through her interactions with a young man. These encounters expose Clare to the disillusionments of love, prompting a deep reflection on the ideals of affection and loyalty. The novel contrasts Clare's innocence with the adult world's less-than-ideal truths, highlighting the emotional tension that comes from realizing that love is not always as pure as it seems. Through these revelations, the narrative delves into themes of memory, social class, and the transition from childhood innocence to a more complex understanding of relationships and personal growth.