A high-school girl in Harlem, Geneva Settle, is the target of a ruthless professional killer—Thompson Boyd—who has been hired to murder her for reasons unknown. His first attempt, in a deserted museum early one morning, is a failure but it’s clear to Lincoln Rhyme that he’s going to strike again, from clues the killer leaves behind, one of which is the twelfth card in the tarot deck, The Hanged Man, whose meaning resonates eerily throughout the story.