According to the FBI, at any given time there are estimated to be 35 - 50 serial killers active in the United States. Although this is a frightening statistic, even more frightening is the fact that some of these killers are never identified. They are able to continue their homicidal sprees without ever being caught. Gathered here are the true stories of some of them including their victims, their murderous methods, the investigations and theories and the current status of their cases. In some cases the killer has been given a nickname by the police or the press and in some cases, the crimes themselves are named. In all cases, the actual identity of the killer has not yet been found and they have never been brought to justice. Some of the cases included here are: The Atlanta Ripper The Freeway Phantom The Santa Rosa Hitchhiker Murders The Frankford Slasher And more... Certainly this is not a complete list and presumably more are being added each day. Any fan of the true crime genre will find the stories here fascinating and chill producing.