Autumn 1908 finds Caroline Fremont Jones and her partner in love and work, Michael Kossoff, traveling incognito, riding the rails from San Francisco to Boston. The railroad hired the sleuthing couple to investigate a series of accidents. But before they can solve the mystery, they become victims of the worst mishap yet when their train blows up near Salt Lake City. Was it a callous act of vandalism-or something even more sinister? Michael isn't about...