Cross Country James Patterson

Another Detective Alex Cross murder mystery, but this one starts in the District of Columbia, and moves to Africa, as the detective tracks down the killer of a friend. If even half of the brutality, killing, and hopelessness of the African people is correct, the conditions are beyond horrible. Mercenaries, corrupt officials, lawlessness, and intrigue leave Alex the hunted as well as the hunter; the reader doesn't learn until the end of the book, the identity of the real bad guys.
The book is well-written as usual, but the ending left me with unanswered questions.