Sandstorm (Sigma Force Series)

An inexplicable explosion rocks the antiquities collection of a London museum, setting off alarms in clandestine organizations around the world. And now the search for answers is leading Lady Kara Kensington; her friend Safia al-Maaz, the gallery's brilliant and beautiful curator; and their guide, the international adventurer Omaha Dunn, into a world they never dreamed existed: a lost city buried beneath the Arabian desert. But others are being drawn there as well, some with dark and sinister…