When a mysterious man is found dead in a New York mansion's secluded room known as "the circular study," it falls to detective Ebenezer Gryce and his young assistant to unravel the labyrinthine case. The Circular Study showcases Anna Katharine Green's gift for intricately plotted mysteries, full of false identities, family secrets, and unexpected revelations. As the investigation deepens, clues intertwine across generations and hidden motives rise to the surface. With keen psychological insight and a flair for suspense, Green constructs a mystery that is as much about human nature as it is about deductive logic. Her female characters are intelligent and essential to the unraveling of the case, offering a progressive edge for the era. With its blend of gothic setting, high society intrigue, and classical detective structure, this novel is a stellar example of early American crime fiction-and a gripping read from beginning to end.