Sandstorm (Sigma Force Series)

An inexplicable explosion rocks the antiquities collection of a London museum and the race begins to determine how it happened, why it happened, and what it means.

Lady Kara Kensington's family paid a high price in money and blood to found the gallery that now lies in ruins. Her search for answers leads Kara and her friend Safia al-Maaz, the gallery's curator, into a world they never dreamed existed. Evidence exposed by the tragedy suggests that Ubar, a lost city buried beneath the Arab…