Natalie Black, the U.S. ambassador to the Court of St. James, has returned to Washington, her job in jeopardy. Her fiancé, George McCallum, Viscount Lockenby, has died in a car accident, and mysterious rumors begin that she’s responsible begin to surface: she broke off the engagement and, heartbroken, he killed himself. Then someone tries to force her off the M-2 outside London. Again, rumors claim it was a sympathy ploy. When she returns to the United States, she’s nearly killed when a car tries to mow her down while she’s out for a run.

The next high-octane thriller in the FBI series featuring Dillon Savich and Lacey Sherlock from # 1 New York Times–bestselling author Catherine Coulter.

Insidious is the twentieth thriller in #1 New York Times bestselling author Catherine Coulter's FBI series. FBI agents Savich and Sherlock must discover who is trying to murder eighty-six-year-old Venus Rasmussen, a powerful, wealthy society icon. They soon find out that the danger may be closer than expected.

When Agent Dillon Savich saves Kara Moody from a seemingly crazy man, he doesn’t realize he will soon be facing a scientist who wants to live forever and is using “John Doe” to help him. But when the scientist, Lister Maddox, loses him, he ups the stakes and targets another to take his experiments to the next level.

The next chilling thriller in the New York Times bestselling FBI Thriller series delves into the terrifying mind of an escaped mental patient obsessed with revenge in this next installment of her riveting FBI series. When he fails to kidnap five-year-old Sean Savich, agents Sherlock and Savich know they’re in his crosshairs and must find him before he continues with his ‘kill’ list.

The #1 New York Times bestselling FBI Thriller series returns with another tour de force in which Agent Sherlock risks losing her career—and her sanity—over a case that is more complicated and twisted than any she’s ever encountered.

A young wife is forced to confront a decades-old deadly secret when a medium connects her to her dead grandfather.

A vicious psychopath wants ultimate revenge against Savich, but first, she wants to destroy what he loves most—his family.

Seven years ago, Mia Briscoe was at a frat party with her best friend Serena when a fire broke out. Everyone was accounted for except Serena. She was never heard from or seen again. Now Mia is an investigative journalist covering the political scene in New York City, but she hasn’t given up trying to find out what happened to her friend that night. When an old photo taken at the frat party gives her clues, Mia realizes she knows just where to look. She enlists FBI agent Sherlock’s help to uncover a sinister string of events going all the way back to that disastrous party.

When she was twelve years old, Kirra Mandarian’s parents were murdered and she barely escaped with her life. Fourteen years later Kirra is a commonwealth attorney back home in Porte Franklin, Virginia, and her goal is to find out who killed her parents and why. She assumes the identity of E.N.—Eliot Ness—and gathers proof to bring down the man she believes was behind her parents’ deaths. She quickly learns that big-time criminals are very dangerous indeed and realizes she needs Dillon Savich’s help.