Death Takes a Holiday (A Grace Holliday Mystery #3)
Elisabeth Crabtree
Soon, she discovers that all of the passengers have been lured to the train under false pretenses and that a sinister presence lurks among the luxurious accommodations.
When one of the passengers is murdered, and the train becomes stranded in the middle of nowhere, Grace and Kyle find themselves in a race against time to trap a killer before the clock strikes twelve.