Criss Cross (Alex Cross Book 27)

In this thriller, a mysterious serial killer known as "M" launches an investigation that forces Alex Cross and his partner John Sampson to confront dangerous secrets from their past. When Cross and Sampson witness the execution of a killer they helped convict in a Virginia penitentiary, they are called hours later to a copycat crime scene. A note signed "M" left at the body reads: "You messed up big time, Dr. Cross." Cross begins to question whether an innocent man was just executed. As "M" draws the detective to multiple homicide sites, each marked with disturbingly familiar details from decades-old cases and Cross family secrets, the stakes escalate. The killer is pursuing something so valuable to Cross that its loss would be devastating.