Inside the walls of Lincoln School there are lots of deep, dark secrets. Money is being stolen from the student activity fund, a teacher is accused of raping a student, another teacher is caught hitting a student, and a teacher is having an affair with the parent of a student.

The biggest secret of all is who poisoned the principal, a man who was hated by the majority of staff members in the building. There are lots of suspects. Fifth grade teacher Dana Lawrence is determined to figure out who did it. Get to know sleuth Dana, and what happens within the walls of Lincoln School, in this first in a series of mysteries.