A child killer is stalking the inner city of Washington, D.C., his latest victim Shanelle Green, an adorable first grader from Sojourner Truth School. This killing is especially unsettling to Detective Alex Cross. Sojourner Truth is the school his son Damon attends, just four blocks from his home. While the death of an inner-city black child doesn't garner much media attention, another murder is making big headlines. The same day that Shanelle was beaten to death, Senator Daniel Fitzpatrick was found handcuffed to a bed and shot execution style. The only clue the police have to go on is a bizarre rhyme, signed "Jack and Jill," promising more high-profile executions, ultimately targeting the president of the United States. When Cross is called in to help protect the president, he begins to suspect that the two cases are somehow related. As he races to put all the pieces together, the killers continue their bloody rampage, paralyzing the city. Like Along Came a Spider and Cat & Mouse, Jack & Jill is a rapid-fire thriller from start to finish, with enough plot twists to satisfy even the most jaded mystery fan.