This historical novel weaves a multi-generational tale spanning from the Edwardian era to the present day. The story is told from the perspective of Grace Bradley, a former housemaid at the grand Riverton Manor, as she reminisces about her time at the estate and the secrets she has kept for over fifty years.

The novel follows the lives of the Hartford family, aristocrats who inhabit Riverton Manor, and explores themes of memory, societal change, and the weight of the past. The story unfolds as Grace, now in her nineties, receives a letter that prompts her to recount the events and relationships that defined her time at Riverton, including her connection to the Hartford siblings, Hannah and Emmeline.

Morton intricately portrays the shifting dynamics of the British aristocracy during the early 20th century, set against the backdrop of war, social upheaval, and artistic revolution. The novel also explores the blurred lines between servant and family, duty and desire, and how memories can be both elusive and haunting.