Operation Storm City - Joshua Mowll

Book Three of The Guild Trilogy finds Becca and Doug back at their old family home in Lucknow, India, where they discover research papers containing clues to their missing parents' expedition route and to the location of Ur-Can - the fabled Storm City. Soon they are on a perilous journey to the Takla Makan desert, racing against the enemy by steam train, riverboat, and airship across the Himalayas. But the race is on to take control of Ur-Can - ancient source of power and threat to the security of the planet. Can Becca, Doug and the Guild get there in time? And has their quest taught them enough to solve the final mystery of Storm City, or will they find their parents only to lose them again for ever?