Mark Tremblay and Paige Sanchez were embarking on a new life together. They had just moved into their new home ... the home Mark had bought before they met, after returning from duty in Afghanistan with the Navy SEALS. But as they looked out over tree-covered hills, admiring the panoramic view, their attention was drawn to something that would change their lives. Hooded men dressed in camouflage and carrying assault rifles were running up the sloping lawn toward them. Only through the experience he'd gained in combat was Mark able to protect Paige and get to safety. But Mark wasn't able to protect his stepchildren, out in a local park with their babysitter. Mark and Paige emerge from the attack to discover that their children and the nanny are gone. Who were those men and what did they want? Mark may have left the SEALS but he certainly hasn't left the heat of battle with his new job at the FBI. In the weeks preceding the attack Mark had been working his way into the fringes of a mafia family. But it isn't the organized crime families that pose the biggest threat. FBI intelligence has revealed that ISIS is in the process of bringing its religious war to America by infiltrating the mafia and placing sleeper cells within it. Mark is in the way of ISIS's plans - and they want him removed. Can Mark stave of 'The Ultimate Threat' in his mission to save not only his family but the freedom of America as well? 'The Ultimate Threat' is a turbo-charged action thriller that will keep readers gripped to the last page. 'A brilliant action story ripped straight from the headlines.' - Tom Kasey, best-selling author of 'Cold Kill.'