In search of hidden diamonds, Claire returns to the German countryside At the height of World War II, Iris is a young Jewish girl living in Munich. One night, while on a double date, she lets herself get talked into staying out far past curfew. When she returns home, her family has disappeared. With her uncle Oswald, Iris races for the frontier, pausing at Saint Hildegard's Mill to bury the family diamonds. She escapes to the United States, where she lives quietly for five decades. She will never return to look for her diamonds, but she has a friend who will. Claire Breslinsky lived in Munich during her wild, carefree youth, but those days are long gone. When an old friend invites her to a wedding at Saint Hildegard's Mill, Claire demurs--until Iris tells her about the hidden fortune that awaits her. Claire returns to Munich to attend the wedding, take some pictures, and do some light treasure hunting. But she will end up investigating a murder instead.