Tony Park 
The Cull [EPUB ebook] 

Former mercenary Sonja Kurtz is hired to set up an elite anti-poaching unit. From South Africa to to the Serengeti in Tanzania Sonja’s fighting a war on many fronts against enemies known and unknown.
British business tycoon Julianne Clyde-Smith will do anything to save Africa’s endangered wildlife, including setting up an elite anti-poaching squad. Hiring Sonja Kurtz to head up the covert strike force, Julianne gives the former mercenary whatever she needs to take down Africa’s poaching kingpins. As the body count rises, it becomes harder for Sonja and her team to stay under the radar.
When her former flame, safari guide and private investigator Hudson Brand, is hired to investigate the death of an alleged poacher, Sonja is forced to ask herself if Julianne’s wildlife crusade has gone too far.
As the investigation deepens it becomes increasingly apparent that a shadowy underworld syndicate known as the Scorpions are pulling the strings behind Africa’s poaching epidemic. Just as Julianne is intent on wiping out poaching so, too, are the Scorpions concentrating on taking out the women who stand in their way…