The White Cockroach by William M. Barnes

The DEA recruits Darla McCargo by blackmailing her. As an undercover agent she is to become the lover of a drug baron in Mexico. His unpredictable temper makes her mission the more dangerous. As long as she shows no weakness, the powerful man respects her. Resourceful and strong-willed, Darla manages the balancing act of stringing Chuy Domingo along even when his ex-lover is released from prison. But how long can she keep up the game, when rival drug gangs go to war and U.S. politicians enter the stage trying to get a bigger share of the cocaine cake.

The White Cockroach is more than a high-tension thriller. It questions the current laws on drug prohibition and raises social issues, conflicts and exploitation marking the relationship between the two North American neighbors. Just the kind of story I love.

If you want to read an excerpt, go to:
http://www.freebookexcerpts.com/2009/06/26/the-white-cockroach-by-william-m-barnes/