Set in 1972 during the Cold War, England's legendary intelligence agency MI5 embarks on an operation code-named "Sweet Tooth" to fund writers whose politics align with those of the government. Cambridge student Serena Frome is hired to infiltrate the literary circle of a promising young writer named Tom Haley. But when she begins to fall in love with him, she wonders how long she can conceal her undercover life.

Clay Jannon has landed a new gig working the night shift at Mr. Penumbra’s 24-Hour Bookstore. But after just a few days on the job, Clay begins to realize that the store is even more curious than the name suggests. He concludes it must be a front for something larger, and soon he’s embarked on a complex analysis of the customers’ behavior. It turns out the secrets extend far outside the walls of the bookstore.

Anti-Terrorist Task Force agent John Corey and his wife, FBI agent Kate Mayfield, have been posted in one of the most dangerous places in the Middle East to track down a high-ranking Al Qaeda operative called The Panther. John and Kate don't know the entirety of their mission, but they know there is more to it than meets the eye.

In the aftermath of a storm, travel writer Lea Sutter discovers twin orphaned boys. Filled with a desire to do something to help, she impulsively decides to adopt them. The boys, Samuel and Daniel, seem amiable and immensely grateful. But no one can anticipate their true nature --- or predict that, within a few weeks’ time, Lea’s husband will wind up implicated in two brutal murders.

In the late spring of 1865, as Washington mourns the death of Lincoln, Detective Temple McFadden witnesses a murder at the B&O Railroad Station --- and then makes an even more staggering discovery. On his slain friend's body he finds two diaries: one that clearly belongs to Mary Todd Lincoln and one that he learns was penned by John Wilkes Booth. Together, these documents reveal the true depth and reach of the conspiracy behind the assassination.

Caren Gray manages Belle Vie, a sprawling antebellum plantation that has turned into an eerie tourist attraction. Outside the gates, a corporation has been snapping up land from struggling families who have been growing sugar cane for generations and replacing local employees with illegal laborers. Tensions mount when the body of a female migrant worker is found in a shallow grave on the edge of the property, her throat cut clean.

Intelligence operative Michel Khoury has one mission: the peaceful resolution of the Middle East conflict that upended his life. As his relationship with Helen, a pretty English girl, develops, he is unable to tell her about his past --- or the collection of passports and unmarked bills he's concealed in the bathroom they share. When Michel's secrets turn deadly, they find themselves on the run from the very people they thought they could trust.

A few years before the fall of the Berlin Wall, spook-turned-novelist Edwin Lemaster revealed to up-and-coming journalist Bill Cage that he’d once considered spying for the enemy. For Cage, the news story created a brief but embarrassing sensation and heralded the beginning of the end of his career in journalism. More than two decades later, Cage receives an anonymous note hinting that he should have dug deeper into Lemaster’s pronouncement.

Three elderly men are gunned down at a local diner. One of the witnesses to the brutal incident was Carla Elkins, the prosecuting attorney’s daughter, who believes she might be uniquely placed to help her mother do her job. But could Carla also end up doing more harm than good --- in fact, putting her own life in danger?

Bill, the “Nameless Detective,” and his wife Kerry were in the Sierra foothills falling in love with a cabin when Kerry went missing. Bill begins a search that uncovers just what price the citizens in town without pity may have to pay. Following the few leads he has, Bill comes face to face with the Hellbox.