In this FBI Thriller Special Agent Dillon Savich teams up with new agent Lacey Sherlock in a case that leads them back to the murder of Sherlock's sister seven years ago—and puts both their lives on the line. As the head of the FBI’s Criminal Apprehension Unit, Dillon Savich has developed predictive analogue programs to aid in the capture of serial killers. Enter Lacey Sherlock, a very well-qualified new agent who seems bright and eager and on the up-and-up. But is she really? When there’s a vicious murder in Boston, she’s off like a shot, lying to Savich. When Savich finds out what’s going on, he realizes they’ll all be in deep trouble, maybe even victims themselves, if he and Sherlock don’t find out who murdered her sister seven years before....
A long weekend in the Poconos is cut short when Sherlock and Savich are helicoptered back to Washington to lead the investigation into the brutal murder of a Supreme Court justice. Savich allows Callie Markham, an investigative reporter for The Washington Post, to partner with local Metro Police liaison Ben Raven since she's got the inside track--she's the stepdaughter of the murdered justice. Despite Detective Raven's unwillingness to have a civilian along, Callie Markham ends up riding shotgun to help look for her stepfather's murderer.