Make them cry : a novel
(Book)

Diane Harbaugh, a former prosecutor notorious for her aggressive tactics, is now a DEA agent who often has witnesses confessing in tears. When she hears from Gustavo, a high-ranking cartel member with an invaluable secret about the international black market, she's thrown for a loop. In Mexico the leads reveal a criminal conspiracy more pervasive than anything she and the DEA ever suspected. Teaming up with Ian Carver, a disillusioned CIA agent, they unravel layers of deceptions, grifts, and schemes that date back to the beginnings of the Afghanistan War. As the target of cartel assassins and their own government, the only way out is for Diane to do the one thing she promised herself she'd never do. -- adapted from jacket