When a prominent antique dealer dies under suspicious circumstances in the eccentric enclave of Junktown, reporter Jim Qwilleran must look past the surface to uncover a calculated murder. Qwilleran, accompanied by his perceptive Siamese cat Koko and the newly introduced Yum Yum, navigates the insular world of antique collectors to find the truth behind the supposed accident. The narrative, presented in a traditional third-person perspective, follows Qwilleran as he balances his professional journalistic duties with his amateur sleuthing efforts. He faces resistance from the tight-knit community of dealers who guard their secrets with as much fervor as their inventory, while Koko provides the intuitive leaps necessary to crack the case.

This work is widely recognized as a foundational entry in the cozy mystery genre, establishing the long-running dynamic between Qwilleran and his feline companions. Readers often highlight the charm of the Siamese cats' intuitive contributions to the investigation as a defining element of the series. The setting of Junktown is frequently praised for its quirky atmosphere, which provides a distinct backdrop for the central mystery. The narrative style is noted for its gentle pacing and focus on character-driven intrigue rather than graphic violence. These elements combine to create a consistent and engaging experience that has maintained a dedicated following over several decades.