Riley masterfully weaves a tale of family secrets that have spanned generations. The reappearance of Freddie acts as a catalyst, threatening to expose a past shrouded in mystery. As Posy grapples with her own tumultuous history, she begins to uncover long-buried truths about her family and the walls of Admiral House, leading to a cascade of shocking revelations that will forever change the lives of those involved.

The novel explores the complexities of forgiveness and the possibility of second chances later in life. Posy must confront her lingering resentment towards Freddie for his past actions, while also navigating her complicated relationships with her sons. Through a journey of self-discovery and acceptance, Posy learns the importance of letting go of past hurts in order to embrace the future.

The butterfly room, a symbol of Posy's idyllic childhood and her late father's love, serves as a poignant reminder of the importance of cherishing memories. The estate's lush gardens, a testament to Posy's own dedication and love for nature, act as a refuge and a place of healing throughout the novel. Riley beautifully illustrates how nature can offer solace and a connection to the past, even in the face of adversity.