That Affair Next Door

A light in an empty house is enough to draw Miss Amelia Butterworth into a murder investigation. In That Affair Next Door, Anna Katharine Green places her observant, socially established heroine beside a crime scene that the police might otherwise control without civilian interference. Miss Butterworth notices a man and woman enter the neighboring property; when only the man leaves, curiosity becomes evidence.

The next morning, her questions lead to the discovery of a woman crushed beneath a cabinet. Detective Ebenezer Gryce takes charge of the official inquiry, but Miss Butterworth begins one of her own. She is in her fifties, unmarried, confident in her standing within New York society, and unwilling to accept that attention to human behavior is mere nosiness. Those qualities make her both useful and difficult to dismiss.

Green builds the mystery around competing methods. Gryce has professional procedure, access, and experience. Miss Butterworth has proximity, social intuition, and the determination to pursue details that disturb her. Their investigations create friction as well as momentum, since each must judge what the other has understood or overlooked.

Published in 1897, the novel pairs a complex puzzle with an unusual amateur detective. Its suspense rests not only on identifying the killer, but on whether an independent woman can make her knowledge count inside a case governed by male authority.