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 Savich, who has developed a predictive program to aid in the apprehension of serial killers.

Madness and murder rip through the suspense novel by the bestselling author Catherine Coulter.
FBI Agent Dillion Savich is on a challenging case involving the kidnapping of two teenage boys when trouble boils up in his personal life. His younger sister Lily has crashed her car into a redwood in California's Hemlock Bay. Is it another suicide attempt, the second since the loss of her young daughter some seven months before? Savich and Sherlock...

Son of an ex-FBI agent, Miles Kettering, six-year-old Sam Kettering is kidnapped and taken to eastern Tennessee. The boy manages to escape. But the kidnappers do not give up. Miles Kettering joins Lacey Sherlock and Dillon Savich to investigate why the kidnappers want this little boy so badly - and they also soon find themselves ineluctably drawn into the investigation of the murders of three math teachers in the Washington, D.C. area.

Agents Lacey Sherlock and Dillon Savich are up against an unstable villain with a very long memory in this FBI Thriller from #1 New York Times bestselling author Catherine Coulter.
The explosive action kicks off as treasure-hunting FBI agent Ruth Warnecki is on the trail of stolen Confederate gold hidden in Winkel’s cave in western Virginia. She never expects to find herself chin-deep in a grisly murder that leaves her nearly...

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...

Traveling with her mother to Georgia in the aftermath of her father's death, seven-year-old telepath Autumn Backman discovers her own family's murderous activities, desperately contacts FBI agent Dillon Savich, and promptly disappears.

While FBI agents Savich and Sherlock track down a female serial killer with possible ties to Ted Bundy, Special Agent Lucy Carlisle learns from her dying father that her long-missing grandfather may actually have been murdered by her grandmother years ago, an act connected to a mysterious group called The Protectors.

FBI Special Agent Griffin Hammersmith must figure out who was behind the attempt on his sister's life while helping FBI agents Savich and Sherlock discover who murdered the grandson of the former chairman of the Federal Reserve Bank.

"The next high-octane thriller in the FBI series featuring Dillon Savich and Lacey Sherlock from # 1 New York Times-bestselling author Catherine Coulter. When Special Agent Lacey Sherlock foils a terrorist attack at JFK airport, she thinks her job is done and turns the reins over to the New York FBI. But stopping the grenade-carrying crazy was only the beginning. Another plot unfolds nearly simultaneously with a bomb at St. Patrick's Cathedral. The...

"The highly anticipated twenty-first FBI thriller by #1 New York Times bestselling author Catherine Coulter presents Agents Savich and Sherlock with two baffling mysteries. Working with Agent Cam Wittier (Insidious) and New York-based former Special Forces agent Jack Cabot, they must race against the clock to catch an international criminal and solve the enigma of the man called John Doe. When Agent Dillon Savich saves Kara Moody from a seemingly...