This collection features the sharp-witted Amelia Butterworth, one of the first spinster detectives in literary history. Across three engaging novels, she applies her keen observational skills to solve mysteries alongside professional detectives. From a suspicious death next door to eerie happenings on a secluded lane, and a perplexing case in a bizarre circular room, each story blends intrigue with Green’s pioneering detective fiction style. Included are That Affair Next Door, Lost Man’s Lane, and The Circular Study.