Sequel to Queen of Death. Nothing is ever simple with the BAU. Take this case for example; an Angel of Mercy case at Charity Grace Hospital. It seems simple but in reality is anything but, this case will test them and bring back memories of an old team mate. This case bleeds into another, bringing forward an age-old question are they safe? Another question is brought forward, do they know this person because it seems that this killer knows them. Can the brightest minds of the FBI solve this one or will this case haunt them forever? Revenge is sweet even after so many years.