It seemed like a great way to bank some cash, travel to exciting destinations on his boss’ dime, and keep under the radar of some very bad men trying to kill him.

A 4,000-year-old mystery lurks in the hills of Georgia. While investigating a strange series of ancient symbols, an archaeologist vanishes, and a professor he entrusted with the secret is murdered. Former government agent Sean Wyatt learns of his friend's disappearance and the murder. Now he must unravel the clues to the ancient mystery that holds incredible power.

Since the dawn of civilization, a hidden hand has gripped mankind. Operating in darkness with limitless wealth and power, this ancient Shadow Caste has controlled every major event in human history - mass migrations, revolutions, plagues, even two world wars. But now these ancient “caretakers” want to change the global experiment. Civilization is too successful, they believe, and our overpopulation threatens the existence of all life on earth. 

The Ghent Altarpiece is the most violated work of art in the world. Thirteen times it has been vandalized, dismantled, or stolen. Why? What secrets does it hold? Enter UNESCO investigator, Nicholas Lee, who works for the United Nations’ Cultural Liaison and Investigative Office (CLIO). Nick’s job is to protect the world’s cultural artifacts—anything and everything from countless lesser-known objects to national treasures. When Nick travels to Belgium for a visit with a woman from his past, he unwittingly stumbles on the trail of a legendary panel from the Ghent Altarpiece.

When those inside the corridors of power need help outside the law, they know who to call. Jonathan Grave, covert rescue specialist, always gets results. No names. No feds. No trace evidence.

Unverified reports tell of a hidden treasure trove deep beneath the Owl Mountains in Poland. Many have tried, but all have failed to locate the legendary Nazi gold train. Jack Reilly mourns the loss of his grandmother, a Holocaust survivor, and an esteemed historian. In memory of her, the retired Delta operator tours the place of her imprisonment, the Auschwitz-Birkenau State Museum, site of the infamous Nazi concentration camp.

Father Jonah Barlow is dead. The respected Jesuit scholar of apocalyptic studies might have died from a fall in his apartment...or was he pushed? All that is known for sure is that the provocative manuscript he was working on—a book that promised to reveal the upcoming fulfillment of ancient and recent prophecies, including the shocking Third Secret of Fatima—is missing. Two female detectives take on the investigation as a possible homicide, turning to Vatican archivist Father Michael Dominic for his help, since Barlow sent the young priest the only other copy of the manuscript.

Half a century ago, an aberration was spotted by one of our earliest satellites, and summarily dismissed as a hardware malfunction. But it was no aberration. And no malfunction. It was an accidental glimpse of something extraordinary, and very old. Mocked for decades, the man who designed the satellite is now dead. With the system's original data firmly in the hands of former NTSB investigator Joe Rickards and anthropologist Angela Reed.

Colton Beck has six months to live. He works for the Angor near Los Angeles, aware that any day could be his last. The Angor arrived 20 years ago, resolved to help mankind survive, but not everyone believes their motives are honorable. When the Angor offer humanity a colony world, Colton is determined to see another planet before his final breath. He’s been diagnosed with Xeno, a rare disorder that surfaced with the Angor’s arrival, but he won’t let this stop him.

In 1959 Tibet, a Buddhist artifact of immense importance was seemingly lost to history in the turmoil of the Communist takeover. But when National Underwater and Marine Agency Director Dirk Pitt discovers a forgotten plane crash in the Philippine Sea over 60 years later, new clues emerge to its hidden existence. But Pitt and his compatriot Al Giordino have larger worries when they are ordered to recover a failed hypersonic missile from Luzon Strait. Only someone else is after it, too.

Twenty miles east of Devils Tower, in the sleepy town of Cascade, Wyoming, a cryptic letter is found. It mentions a "wealth of a nation", and reads as nothing more than fanciful fiction, except that its author was one of the most influential men in American history, famed explorer and former President of the United States, Theodore Roosevelt. The letter also references the Seven Sisters of Native American folklore. The correlation between the two subjects is unknown, even to Chatan, the message’s discoverer, a young man with Lakota ancestry.

Ex-Delta Force sniper Breed has spent most of his life at war, and now he’s trying to make some time for peace. But when a veteran from his old unit is murdered in El Paso, Breed feels duty-bound to bring the killer to justice. A feeling that only grows stronger when his friend’s widow and son are also murdered. As he uses all his specialist skills to uncover the truth, Breed finds himself working with some unlikely allies - a devious CIA operative and a determined Latina reporter. Together, they uncover a conspiracy to launch a massive attack on US soil. 

Ex-Special Forces operator Tom Keeler is a rambling man. He’s just passing through the town of Alencourt, France, and in less than an hour, someone tries to kill him. Nice place, nice try. But it’s a case of mistaken identity, and they picked the wrong guy. The French police can’t be trusted, except for the beautiful Cecile Nazari. She finds out fast that keeping up with Keeler is a dangerous occupation. Because someone’s preying on the weak and unprotected. Someone murderous. But they never counted on coming up against a guy like Keeler. 

It begins in Africa. A United Nations relief team in a small village in the Congo makes an alarming discovery. An unknown force is leveling the evolutionary playing field. Men, women, and children have been reduced to a dull catatonic state. The environment surrounding them—plants and animals—has grown more cunning and predatory, evolving at an exponential pace. The insidious phenomenon is spreading from a cursed site in the jungle—known to locals as the Kingdom of Bones—and sweeping across Africa, threatening the rest of the world.

Pulled off an undercover assignment, Widow returns home to a small town in Mississippi - a place he tried to forget. Taken to be a worthless drifter by the locals, Widow uses his skills to uncover the truth about his mother's last investigation. What was she looking for? What he discovers is an unsolved mystery of missing girls and townspeople harboring a deadly secret - a secret they'll die to protect.