Thinking about travel? Mysteries and travel seem to go hand in hand. I was asked to find some of these and these mysteries involve travel in them.
Cozy Mystery List Blog - http://www.cozy-mystery.com/blog/tour-guide-travel-mystery-books.html. This lists several authors.
Mary Hudgins, Travel Mysteries - http://members.cox.net/mhudgins1/
Shady Grove Mysteries by Jackie Lynn - http://us.macmillan.com/author/jackielynn
Candy Calvert - http://www.cozy-mystery.com/Candy-Calvert.html
I know there have to be more of these but I just haven't found them yet. I am sure I have read individual books involving Tour Buses - for example: D.R. Meredith (Megan Clark series). If you have any to add to the list, please let me know.