This Mystery is Excellent! ~ Challenge from Bestseller Writer

The film centers around a murder mystery unfolding on a luxury overnight train traveling from Sapporo to Ueno, Tokyo. The victim is a film director, and the investigation leads to four female suspects.

Another storyline involves a pianist who mysteriously dies after what is described as her best performance, with potassium cyanide found in her coffee. Additionally, a man faces a personal crisis when his daughter is kidnapped, revealing his past as a popular TV hero.

The film also includes a plot where two men, stranded due to a snowstorm, must confront life or death choices during a power outage. This blend of suspenseful narratives showcases the complexity and intrigue typical of the mystery genre, making it an interesting watch for fans of thrillers and detective stories.