"The Case of the Sulky Girl" is a detective novel featuring the iconic private investigator, Philo Vance. The story unfolds as Vance is called upon to solve the mystery surrounding the sudden death of a young woman, which initially appears to be a suicide. However, as Vance delves deeper into the investigation, he uncovers a web of deceit, betrayal, and hidden motives, revealing that the case is far more complex than it initially seemed.
The narrative showcases Vance's keen observational skills and intellectual prowess as he interacts with various suspects and witnesses. His methodical approach allows him to piece together clues that others overlook, culminating in a dramatic resolution. The novel highlights the themes of class, societal expectations, and the psychological complexities of its characters.