A gruesome discovery within a Parisian wax museum forces Dr. Gideon Fell to confront a series of seemingly impossible murders. Dr. Gideon Fell, a scholar and amateur detective, finds himself entangled in a web of intrigue involving a mysterious waxworks exhibit and a string of deaths that defy logical explanation. He must navigate the complex social circles of 1930s Paris while contending with a killer who utilizes the macabre setting to mask their movements. The narrative follows a traditional detective framework, emphasizing the intellectual rigor required to dismantle a seemingly supernatural crime. Fell faces opposition from both the elusive perpetrator and the rigid constraints of the local authorities who struggle to comprehend the mechanics of the crimes.

Readers frequently highlight the intricate plotting and the specific brand of atmosphere that defines Carr's work. Discussion often centers on the effectiveness of the impossible crime scenario and how the author manages to maintain suspense without relying on excessive action. Critics often note the balance between the eccentric personality of Dr. Fell and the grim nature of the central mystery. The pacing is generally described as methodical, favoring the slow accumulation of clues over rapid-fire sequences. Many enthusiasts of the genre appreciate the technical precision required to construct such a complex narrative puzzle.