When the luxurious Blue Train reaches its destination in Nice, the discovery of a murdered heiress and the theft of her priceless rubies force Hercule Poirot to intervene in a high-stakes investigation. Poirot must navigate a web of deceit involving the victim's estranged husband and a cast of suspicious travelers to uncover the truth behind the brutal crime. The narrative unfolds through a visual medium, utilizing the graphic novel format to depict the claustrophobic tension of the train journey. Poirot employs his signature methodical logic to challenge the obvious conclusions of the local authorities, eventually orchestrating a dramatic re-enactment to expose the killer.

This graphic novel adaptation is viewed as a stylistic departure from the traditional Christie prose experience, focusing on visual atmosphere to convey the classic mystery elements. The work is often noted for its ability to condense complex plot threads into a concise, accessible format without losing the core deductive logic that defines the Poirot series. Readers typically appreciate how the illustrations provide a fresh perspective on the familiar settings and character dynamics established in the original novel. The adaptation serves as a bridge for those who prefer a more immediate, visual engagement with the detective's most famous cases.