The Plymouth Express Affair

The story begins with a young woman named Katherine Grey who is on her way to visit her aunt when she meets a charming and wealthy man named Rufus Van Aldin. She is invited to travel with him on the luxurious Plymouth Express but soon finds herself embroiled in a complex mystery involving a stolen valuable a missing jewel and a murder. Poirot is called in to investigate and with the help of Katherine he unravels the truth behind the crime. The story is known for its fast-paced plot and clever twists and turns as well as its engaging characters and vivid depiction of the glamorous world of train travel in the early 20th century.