Along Came a Spider

The very first thriller in James Patterson's series international bestselling series featuring forensic psychologist Alex Cross
Two children have been kidnapped from an elite private school in Washington DC, and Detective Alex Cross is charged with finding them.
The kidnapper's identity is quickly determined as one of the children's teachers. But capturing him is the true challenge.
As Cross gets pulled deeper into the strange world of the kidnapper, it becomes clear he is far more dangerous than anyone could have anticipated.