Scotland Yard’s new chief inspector Nicholas Drummond is on the first flight to New York when he learns his colleague, Elaine York, the "minder" of the Crown Jewels for the "Jewel of the Lion" exhibit at the Metropolitan Museum of Art, was found murdered. Then the centerpiece of the exhibit, the infamous Koh-i-Noor Diamond, is stolen from the Queen Mother’s crown. Drummond, American-born but raised in the UK, is a dark, dangerous, fast-rising star in the Yard who never backs down. And this case is no exception.

It’s Bastille Day in France, and the private French space agency Galactus - France’s answer to Space X, owned by the eccentric treasure hunter Jean-Pierre Broussard - has just sent a satellite payload into orbit. Billed as a “communications” satellite, it harbors a frightening reality: a nuclear electromagnetic pulse has been hidden aboard. In days, when the satellite is in position, Galactus’s head and Broussard’s second in command, Dr. Neveah Patil, will have the power to lay waste to the world with her EMP, and create her own immortality with the Holy Grail.

When several major political figures die mysteriously, officials declare the deaths are from natural causes. Then the German Vice-Chancellor dies on the steps of 10 Downing Street, and a drone is spotted hovering over the scene. The truth becomes clear - these high-profile deaths are well-constructed assassinations, and the Covert Eyes team is tasked to investigate. With the help of Dr. Isabella Marin, a young expert in the enigmatic Voynich Manuscript and cryptophasia, Nicholas and Michaela home in on Roman Ardelean.

Chief Ty Christie of Willicott, Maryland, witnesses a murder at dawn from the deck of her cottage on Lake Massey. When dragging the lake, not only do the divers find the murder victim, they also discover dozens of bones. Even more shocking is the identification of a unique belt buckle found among the bones. Working together with Chief Christie, Savich and Sherlock soon discover a frightening connection between the bones and the escaped psychopath. 

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 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.

San Francisco judge Ramsey Hunt, longtime friend to FBI agents Lacey Sherlock and Dillon Savich, begins the murder trial of Clive and Cindy Cahill only to have federal prosecutor Mickey O’Rourke, known for his relentless, aggressive style, suddenly turn tentative and distracted. Hunt suspects that something is very wrong — and then O’Rourke goes missing, and Judge Hunt gets shot in the back.

A serial killer is on the loose, and it’s up to FBI agents Dillon Savich and Lacey Sherlock to bring him down. They soon discover the killer has blood ties to an infamous and now long-dead monster. Savich and Sherlock are joined by agents Lucy Carlyle and Cooper McKnight, and the chase is on. At the same time, Agent Lucy Carlyle learns from her dying father that her grandfather didn’t simply walk away from his family twenty-two years ago: he was, in fact, murdered by his wife, Lucy’s grandmother.

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 terrorist at JFK refuses to speak to anyone but Sherlock. She heads back with counterterrorist Special Agent Cal McLain to try to get him to talk.

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. It's a race against time literally as Savich and Sherlock rush to stop him and save both present and future victims of his experiments. In the meantime, Cam Wittier and Jack Cabot must track a violent criminal through the Daniel Boone National Forest.

Seven-year-old Autumn Backman has a gift: she can communicate telepathically with others. Not everyone, mind you, but with a select few with whom she shares a special kinship. When Autumn and her mother, Joanna, take her father's ashes to be buried in the family plot in Brickers Bowl, Georgia, she witnesses a horrifying sight: her grandmother and two uncles, burying a pile of dead bodies in the middle of the night.

Yale professor Dr. Edward Kender’s father is undergoing chemotherapy when the supply of a critical accompanying drug, Culovort, suddenly runs out. Unwilling to accept the drug manufacturer’s disingenuous excuse of production line problems, Dr. Kender hires private investigator Erin Pulaski to prove that something more sinister is going on at Schiffer Hartwin.

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.

The explosive action kicks off as FBI agent Ruth Warnecki hunts for Confederate gold in a West Virginia cave. She never expects to encounter the grisly murder that catapults her into a horrific plague of death, all centered on the prestigious Stanislaus School of Music.

When six-year-old Sam Kettering is kidnapped and then manages to save himself, Savich and Sherlock join his father - former FBI agent Miles Kettering - to determine why Sam would be abducted and brought to eastern Tennessee. Though the local sheriff, Katie Benedict, catches up with Sam before the kidnappers do, the case isn't over - not by a long shot.

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.