Angel of darkness

"Kevin Fahey was a second-rate cop and a lousy father. Following his untimely death, he roams the streets, a lost soul. He feels at home at the Holloway Institute, whose troubled patients also live in their own worlds, so when a girl is found murdered close by - seemingly by a convicted serial killer locked up inside the Institute - he decides to conduct a shadowy investigation. But as he pieces the clues together, he fears the answers may tip his troubled teenage son over the edge.