Colchester was a quiet town until a series of frenzied attacks left two people dead and a community paralyzed by fear. This documentary traces the 14-month investigation into the brutal killings of a vulnerable father and an international student. Both victims suffered horrific injuries that pointed toward a calculated and sadistic predator. When the police finally apprehended the suspect, the truth was more shocking than anyone imagined. The person responsible was not a seasoned criminal but a 15-year-old schoolboy living a double life