Zoe and Jack's trip to Rome was to be a romantic one-year anniversary celebration with a little business on the side. Jack's company has landed the plum assignment of providing museum security for the opening night gala of a priceless gem show. However, the exhibit is the next target of a notorious cat burglar who has recently snatched up a hoard of sparkling jewels. When the police accuse Zoe and Jack of switching the real gems for fakes, they are forced to delve into the black-market diamond trade in search of the culprit, a journey that takes them from the fountains and piazzas of the Eternal City to the snow-capped Alps. Book 4 of the On the Run series by bestselling author Sara Rosett.