Murder Onboard the Fremont Dinner Train by David Michael Zink

In the midst of an unpredicted Nor'easter Willy wife Nancy surprises her husband with a adventurous night out as they attempt to solve the murder mystery offered on the eighteen mile tour onboard the Dinner train. When Willy's boss Frank Lamonica becomes the murder victim, officer Matt Wamsley suggest that everyone join in and help solve the crime. That is if you can convince the passengers that this is not an act.