Attorney Michael Gresham has a new go-to person. Her name is Annie and she's twelve. Annie is a savant. She can look at you and, like her idol, Sherlock Holmes, tell you where you're from, whether or not you're happily married, and where you went to school. But now she must use her skills to discover who murdered her entire family, because it looks like the killer was actually looking for her. Annie must profile the killer before he kills her. It will take all of her brilliance and all of the lawyering skills of Michael Gresham. But will even that be enough? At the last minute, Annie spins out an entire universe of killers and leads Michael Gresham to their door. Now the door must be opened.