This is book number 8 in the Alex Cross Novels series.
On the verge of resigning from the DC police force, Detective Alex Cross knows he can't refuse this case. His partner John Sampson has a friend who has been framed for murder and is facing the gas chamber. His accusers? The United States Army. As a new woman in Cross' life brings him hope in the face of a devastating loss at home, Cross and Sampson go up against codes of honor and silence three ruthless killers. But a bigger threat lies in wait: their controller, a lethal genius who will introduce Cross to new depths of terror ... the last of the Four Blind Mice.