Juan Santos in the Profiler's Pastime

Juan Santos is a 17 year old young man who works as a janitor on the night shift in a police station. Juan has investigative talents which were discovered by two detectives at the station. They convince Juan to work with them and together they successfully solve serveral murder cases. While investigating a serial murder case, the trio discover a deadly predator. They know who he is and what he is doing, but they can't prove anything. They do everything they can, stretching the limits of the law to stop this evil monster.