Married FBI agents Savich and Sherlock work and play hard: devoted to their jobs, their son, and each other, they approach each new case with gusto, and appreciate every moment of downtime they can grab. But a long weekend getaway at a secluded cabin in the Pennsylvania woods is cut short when the agents are summoned back to Washington, where a nightmare awaits them: The night before the Supreme Court is to hear opening arguments in a highly controversial...

FBI Special Agents Dillon Savich and Lacey Sherlock are assigned to protect Dr. MacLean, a physician with frontal lobe dementia that could compromise his ability to maintain doctor-patient confidentiality. With a patient list made up of Washington movers and shakers, MacLean's role as a keeper of secrets is jeopardized as well. Is there someone out there so desperate that they'd kill the doctor for what he knows? It is up to Jackson, Savich, and Sherlock...

Lacey Sherlock's life is forever changed when her older sister's body is discovered in an abandoned warehouse. She is the fourth victim of the String Killer, the name given by the media to a murderer who leads his victims into a maze with a ball of twine. Seven years after Belinda's death, Lacey, now an FBI agent, is paired up with computer whiz Dillon Savitch, who has developed a predictive program to aid in the apprehension of serial killers.