Murder By Mistake - Niki Dupre Short Stories, #8

Revenge for the murder of your father is a powerful motive. Twigg Tidwell fits the identity of a killer, though he is only sixteen years old. Niki Dupre does not believe Twigg is guilty, but must overcome sloppy police work and predetermined biases to prove it. After another murder takes place, the trail leads back to the son of the dead man left in the parking lot. But who really committed the murders?