Liza Bradley knows the proper mercies for her career. A painless bullet through the head. An instantly broken neck. Don't want either? Drop your gun and run away. Quickly. Ex-Marine Matt Harrison? Green as lettuce and half as tough. But as Liza's team strikes in earthquake-ravaged Ecuador, Harrison strikes Liza in the only way she doesn't know how to fight. Bullets and broken bones? Useless against her own heart.