Unbeknownst to law enforcement in Chicago, the O'Toole family has been killing people for more than a hundred years. Peter Michaels gets on the trail of these generational serial killers after a massive gravesite is accidentally discovered on a Chicago golf course. The investigative reporter traces the O'Toole family back to the 1920's when the killings started. Currently Ryan O'Toole, the fifth, is on a killing spree. He has killed 37 people so far; will Peter Michaels be the 38th. Are these killers also cannibals? Are serial killers born or made. Peter Michaels discovers there is such a thing as a “warrior gene,” and it's in all of us but with certain types of abuse during childhood it can create killers. Michaels calls in an old friend, Deborah Duke who is a blind genetic detective to trace DNA to help identify the victims and to solve the murders.The O'Toole family has killed more than 120 victims in the last hundred years. Also, a ruthless assassin is hell bent on killing the reporter because Michaels was responsible for the death of his best friend. This page turning thriller will be hard to put down.