Former Navy SEAL Jedidiah Johnson returns to Nashville ready to begin his training with the elite warriors known as the Shepherds. He thinks he knows what to expect when he arrives at the sprawling, state-of-the-art facility, but quickly realizes he’ll have to find his place as the rookie leader of a new team. Then he starts having visions of an imminent attack overseas, and with the clock ticking, Jed and his team are dispatched to neutralize the threat. All the while, Jed hears whispers of another threat - a name that raises unexplained fear and anger throughout the organization.

After Task Force Ember’s successful intervention in Ukraine, John Dempsey disappears without a trace—with no notice or explanation given to his teammates. Spotty intelligence eventually places him in Russia where he is rumored to have been captured by the Russian FSB and is now presumed dead. Mourning his loss, Ember is forced to pick up the pieces, restructure, and continue their mission of keeping America safe. As the president’s “go-to” black ops asset, Ember is directed to find and finish off the Russian spymaster Arkady Zhukov and any last remnants of Zeta cell. 

On the eve of his medical retirement, Navy SEAL Jedidiah Johnson receives a frantic call from his estranged childhood best friend, David Yarnell. David’s daughter has been kidnapped off the streets of Nashville in broad daylight. The police have no suspects and no leads. The only clue: the body of a dead priest left behind at the scene. With the clock ticking, David is growing desperate, as is his wife, Rachel...Jed’s first love.

When shadow warrior and former Tier One Navy SEAL John Dempsey goes undercover to meet with a Vory arms dealer, he thinks he’s laying the groundwork to penetrate the Russian criminal underground. Instead, he walks into a trap orchestrated by Zeta, the secret Russian task force behind a recent assassination attempt on the US President. For Dempsey and his team, the only way out is to lay waste to the Russians, putting a target on Ember’s back.

A shocking attack in Ankara leaves the US Ambassador to Turkey dead and his chief of staff, Amanda Allen, in the hands of brutal terrorists. But Allen is no ordinary diplomat. She’s undercover CIA. The DNI and the President turn to Ember, America’s premier black-ops task force, and its deadliest weapon, former Tier One Navy SEAL John Dempsey, for help. To find Allen, Ember gets embedded in the most dangerous battlefield on Earth: Syria. But when all communications are disabled by an attack in Turkey, Dempsey finds himself with no backup.

John Dempsey, former Navy SEAL and Tier One operator, is back. Only a few months into his new life as an operative for Ember, the United States’ most covert counterterrorism entity, he must stop an old nemesis who’s resurfaced after ten years of operating in the shadows. From the deserts of Iraq, through the jungles of Guatemala, to the streets of suburbia, Dempsey and his Ember team race against time to stop a series of horrific and devious attacks against the homeland.

John Dempsey's life - as an elite Tier One Navy SEAL named Jack Kemper - is over. A devastating terrorist action catapults him from a world of moral certainty and decisive orders into the shadowy realm of espionage, where ambiguity is the only rule. His new mission: hunt down those responsible for the greatest tragedy in the history of the US Special Ops and bring them to justice.

Hostage rescue expert Jonathan Grave and his fellow special-ops veteran, Boxers, are hunting in Montana when shots ring out, and they realize they've become the prey for assassins. In the crosshairs of unseen shooters, cut off from all communication, with the wind at a blood-freezing chill, the nightmare is just beginning. Because Jonathan and Boxers aren't the only ones under fire.

A woman boards a plane in the African country of Burkina Faso having just completed a targeted assassination for the state of Israel. Two minutes later, her plane is blown out of the sky. Over 6,000 miles away, former Navy SEAL James Reece watches the names and pictures of the victims on cable news. One face triggers a distant memory of a Mossad operative attached to the CIA years earlier in Iraq—a woman with ties to the intelligence services of two nations…a woman Reece thought he would never see again.

An unprecedented, potentially nation-ending threat has materialized on the world stage. Fearful of the global consequences of engaging this enemy, administration after administration has passed the buck. The clock, however, has run out and doing nothing is no longer an option. It is time to unleash Scot Harvath. As America’s top spy, Harvath has the skills and experience necessary to handle any situation, but this assignment feels different. With democracy hanging in the balance, Harvath will risk everything to untangle the explosive plot and bring every bad actor to justice.

One afternoon in Boston, everything changes: two abduction attempts on separate sides of the city. A van tries to snatch Tyrell, and two men approach Violetta and Junior in a public park. All at once, it's Code Red. King and Slater don't know who's targeting them, or why, but they have an endless list of enemies from decades spent eviscerating hostiles. It could be anyone. Whoever this rogue force is, they've found a way around every preventative measure. They've done what not even the government could do: tracked down Jason King and Will Slater.

When your only training is as a first class killer, it can be hard to find a job on Main Street. Unless you work for Cobra, the secret agency that takes out the worst of the world’s trash. So when Harry Bauer left the Regiment, the toughest special ops outfit on the planet, Cobra offered him a job, taking out the trash.

One thing Harry Bauer knew for certain: He was not a man who could ever fall in love and make a home. Until it happened. And then he knew something else. He had to give up his job as an assassin for Cobra. He could not lie to that woman; he could not bring danger into her life. But then a hit squad came after him, and Cobra made him an offer he could not refuse. One last job, the Einstaat Brief, and they would keep her safe. 

Secretary of State Frank Malone has been kidnapped from his Cairo hotel - his security detail wiped out. President Natalie Cohen is left with several unacceptable options. It's time to think outside the box, and that can only mean one thing: the revival of the Presidential Agent program. Cohen calls for Charley Castillo to come out of retirement to direct a new Presidential Agent, one Captain P. K. "Pick" McCoy, USMC. Charley may be too old to kick down doors and take names, but Killer McCoy is just the man to get the job done. 

Former disgraced Delta Force commander Kolt "Racer" Raynor has earned his way back into The Unit after redeeming himself during an explosive operation at a black site in Pakistan. But he is about to face his deadliest challenge yet. The most wanted man in the world, American al Qaeda commander Daoud al Amriki, and his handpicked team of terrorist operatives, have acquired stores of Russian-built, shoulder-fired surface-to-air missiles (SAM's) from ex-Libyan spies in Cairo.