The discovery of an architect's identity triggers a series of revelations that force Fanny Williams to confront the hidden connections within her own history. Fanny, a boutique owner, seeks to repurpose an abandoned church, only to find that the building's creator, Oswald Fish, is inextricably linked to her personal life. The narrative follows her investigation into the past, navigating the social and professional circles of London. The story utilizes a third-person perspective to examine the intersection of architectural legacy and individual identity.

Readers and critics often note the author's ability to weave intricate social commentary into a seemingly straightforward mystery. Discussion frequently centers on the balance between the protagonist's professional life and the historical investigation that consumes her. Many highlight the atmospheric depiction of London and the specific attention paid to the architectural details of the church. The narrative is recognized for its dry wit and the methodical way it connects disparate characters through the legacy of a singular, obscure figure.