Time Bombs — Nancy Herndon

AN ELENA JARVIS MYSTERY
Elena Jarvis is an officer in the Crimes Against Persons department of the Los Santos, Texas, police. She's got a sharp mind and a strong sense of justice. She's also got a condescending boss, a chauvinist partner, and an overprotective narc ex-husband. But then, she always knew police work would mean dealing with troublemakers...

BLOOD RUNS QUICKER THAN WATER
The graduation ceremony at Herbert Hobart University was stifling hot, but Elena sweated it out to receive her honorary degree. Then things really heated up--as trees and shrubs around the campus started exploding, injuring eight people. As a serious drought threatens the life and health of the poor Los Santos locals, it seems that a guerrilla war is being waged against anyone who wastes water--and the university's lush greenery and sprinkler system make it a prime target. And as more bombs detonate throughout the city, Elena races to stop the bomber before the entire city explodes...