Dark Tracksby Philippa Gregory Luca and Isolde continue investigating for the Order of Darkness in the fourth book in the Order of Darkness series from #1 New York Times bestselling author Philippa Gregory. Pages of Dark Tracks : Page 1Page 2Page 3Page 4Page 5Page 6Page 7Page 8Page 9Page 10Page 11Page 12Page 13Page 14Page 15Page 16Page 17Page 18Page 19Page 20Page 21Page 22