Robi's Flying Saucer Series 2 - The Paris Sisters

Saffron has spent the past year working her part-time job at Robi's Flying Saucer Drive-In, remembering her friend Clair who disappeared in Europe, and otherwise being bored. It's difficult to make new life happen from a high school and part-time job, even with Fred and Cecilia near. Then the wild comes back. Saffron notices something at the school, an old monk, and she follows him. There, deep in the bowels of the school, is a gemstone so bright, so blue, that changes the very planet. And Sister Maris Stella needs a courier.