An archaeological expedition with a cargo of priceless jade is pursued across the Gobi Desert into the snows of Tibet. This story begins where Patrick O'Brian's devoted fans would want it to, with a sloop in the South China Sea barely surviving a killer typhoon. But the time is the 1930s, and the protagonist a teenaged American boy whose missionary parents have just died. In the company of his rough seafaring uncle and an elderly English cousin, an eminent archaeologist, Derrick sets off in search of ancient treasures in central Asia. Along the way they encounter a charismatic Chinese bandit and a host of bad characters, including Russian agents fomenting unrest. (Most of these meet very bad ends.)