When Alex Cross is called to investigate a massacre style murder scene, he is shocked to find that the victim is an old college friend. Determined, more than ever, to find the perpetrators, he is quickly taken on a thrilling and life-threatening journey into a Washington D.C. Nigerian underworld where heroin dealing, a slave trade and oil and gas theft are all rife. At the centre of this fearsome world, Cross finds the Tiger, the psychopathic leader of a terrifying gang. As the Tiger is on the prowl, showing no mercy to others, Alex Cross is hot on his heels in a chase that takes him to Africa and finds him not only hunting for a horrific killer but also fighting for his own survival.