In "The Green Mouse," Detective Fleming finds himself entangled in a complex case involving crime, intrigue, and possibly murder. The story likely follows Fleming as he investigates the mysterious circumstances surrounding the appearance of a green mouse, possibly a symbol or clue linked to the crime.Chambers' mystery novels often incorporated elements of suspense, intricate plotlines, and compelling characters. "The Green Mouse" might feature a mix of detective work, suspenseful twists, and the uncovering of clues as Fleming delves deeper into the case to solve the mystery.