White bone : a novel
(Book)

"When ex-military contractor John Knox receives a text from partner Grace Chu warning that she fears her cover may have been blown while on assignment, he jumps into action. Knox must locate her overseas handlers, convince them of the danger, and then attempt to retrace the well-hidden steps of a woman who had been investigating how one million euros' worth of AIDS vaccine disappeared, all while eluding angry poachers on a parallel trail. Corruption isn't a 'problem' in Kenya, it's the way of doing business. The poaching of ivory from African elephants, driven by an insatiable demand from mainland China, fuels constant blood and slaughter. Knox faces police, national rangers, journalists, and safari companies who are each in their own symbiotic relationship with elephants, both good and bad..." (From book jacket).