Operation Red Jericho by Joshua Mowll

For Joshua Mowll, it was the surprise of a lifetime. There, among the archives inherited from his great-aunt Rebecca MacKenzie, was a 1920's journal recounting the thrilling and dangerous adventures of fifteen-year old Rebecca and her younger brother, Doug, in the wake of their parents mysterious disappearance in the deserts of China. Now carefully re-created in a lavish volume complete with cloth binding and a journal-style elastic clasp, the siblings tale begins aboard the Expedient, their uncle's enigmatic research ship, and moves at a breathless pace through the streets of Shanghai and on to a terrifying island fortress. Along the way, Doug and Becca encounter an ancient order of Chinese mercenaries, a brutal pirate warlord, a feisty Texan heiress, and a stolen cache of a volatile explosive called zoridium. By their saga's end, the intrepid duo has exposed a murderous plot involving their parents and uncovered a high-minded secret society hidden from the world for hundreds of years.