To save the world and our future, Sigma Force must embark on a dangerous odyssey into an ancient past whose horrors are all too present in this page-turning thriller.

"Lyla Fox knows she has a reputation at the SNAP Agency for being imulsive, but when she receives a threatening letter from a man she helped put in prison, she can't stop herself from going all in to find out why he's coming after her. Unfortunately, she's going to need the help of the one person who questions her choices more than anyone else. Explosives and weapons specialist Nicolás Garcia agrees to help Lyla in order to keep her safe, but her...

"Because its enemies never stop trying to undermine the United States' security, the men and women who serve to protect America must always be vigilant. Few know this better than warriors Brad McLanahan and Nadia Rozek. Newly married, the two are just beginning to settle into their new life together when they are called back into action. Though the Russians were badly defeated by Brad and the Iron Wolf Squadron in their previous bid for world dominance,...

Sam Dryden, retired special forces, lives a quiet life in a small town on the coast of Southern California. While out on a run in the middle of the night, a young girl runs into him on the seaside boardwalk. Barefoot and terrified, she's running from a group of heavily armed men with one clear goal—to kill the fleeing child. After Dryden helps her evade her pursuers, he learns that the eleven year old, for as long as she can remember, has

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"In this action-packed thriller in the New York Times bestselling Tom Clancy's Op-Center series, America's elite task force must take down a group of ruthless domestic terrorists determined to paralyze the country through extreme acts of violence. They are known as the Black Order. Self-proclaimed patriots and survivalists, they refuse to surrender their values and beliefs to the left-leaning cultural and progressive forces threatening their nation....

To finally end the war between their nations, a rogue Ukrainian band of partisans known as the Wolves teams up with members of Russia's military intelligence to assassinate Vladimir Putin. But Putin is aware of the traitors in his midst and assigns the loyal commander of the Russian national guard to root them out. It's a mission Victor Petrov is expected to undertake after he prevents Sweden from joining NATO, by assassinating a deputy minister of...

Danny Manion lands in the Studies and Observation Group, a volunteer task force that focuses on covert action and psychological warfare during the Vietnam War.

"After an official operation turned deadly, Jonas Crow began a new life in Grizzly Harbor with Alaska Force. But when fellow soldier Bethan Wilcox joins the group, she forces him to remember things he actively prefers to forget. That's unforgivable enough. But now the two of them are forced together on a mission to uncover deadly secrets tied to their complicated past, and with the heat between them at a boil, forgiveness is the least of his worries..."--...

Fergus Frew thought he knew what to expect when he signed up with the Navy's demolitions team. But as the Korean War rages on, Fergus and his fellow divers -- a.k.a. "frogmen" -- are tasked with more than just scouting mudflats. Soon they're planting mines. And sabotaging tunnels, bridges... and even fishing nets. Scariest of all, it falls to Fergus to discover where the enemy has placed their mines, a job as painstaking as it is dangerous.

With hope for salvation dwindling, Captain Akira Hayashi deploys on a desperate mission to find Apeiron, believing only she can stop Doctor Otto Cross from completing his reset of Earth. But Akira soon realizes they need more than just Apeiron. Shadow Squad must somehow reunite with Tadhg and the weapon he carries. Only then can Akira lead the charge against the machines in one last fight for the future of humanity.