A luxurious train. A stolen gem. A murder on board.

When the opulent Blue Train speeds from London to the French Riviera, its passengers are unaware that a deadly game is about to unfold. Among them is the glamorous and wealthy Ruth Kettering, who is traveling with a priceless ruby and a turbulent marriage. Before the train reaches its destination, Ruth is found murdered, and the precious jewel is gone.

Hercule Poirot, ever the master of unraveling complex mysteries, is called upon to investigate the crime. As he delves into the lives of the passengers, Poirot discovers a tangled web of love, greed, and betrayal—where nothing is what it seems, and anyone could be the killer.

The Mystery of the Blue Train is a thrilling, high-stakes adventure where danger lurks at every turn, and Poirot must navigate treachery aboard one of the most elegant trains in the world to solve a crime that no one could have predicted.