Alex Cross - This character is a homicide detective and a trained psychologist.
John Sampson - This character camps out on his partner's porch after a killer threatens his partner's family.
Christine Johnson - This character is the principal of the Sojourner Truth School.
Brett and Jeanne Sterling - These characters are the real Jack and Jill killers.
Sara Rosen - This character is known as the "sexy spinster".
Danny Boudreaux - This character's father commits suicide.
Shanelle Green, Vernon Wheatley and Sumner Moore - These are victims of the Truth School killer.
President Thomas Byrnes and Sally Byrnes - These characters are the Jack and Jill referred to by Secret Service code names.
Jay Grayer - This character is always the first investigator on the scene of the Jack and Jill murders.
Chief Pittman - This character pushes the protagonist, literally and figuratively.
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