Betrayal always comes from a circle of trust. When a Delta Force team takes out a terrorist cell in the northeastern mountains of Iraq, they stumble onto something that changes their lives forever. Betrayed, lost, and alone, Dak Harper must find a way to survive, and formulate a plan to set things right...

Revenge heads south of the border. After the events in Miami, former Delta Force operative Dak Harper sets his sights on the next target, former teammate Luis Martinez, who now works for one of the deadliest cartels in Mexico. Luis may seem untouchable, but Dak has his own resources and a deadly set of skills that are rivaled by few. Dak travels to Guadalajara and meets an intriguing cantina owner with her own secrets, and resources. As an underground enemy to the cartels, she gives Dak everything he needs to take down Luis and his employers. But will it be enough? Or does Luis have another trick up his sleeve? This is the third installment in the Relic Runner Origin anthology of short stories.

Vengeance must pick a side. Following the events in Mexico, former Delta Force operative Dak Harper returns to the United States with information on the whereabouts of his next target, former teammate and expert sniper Billy Trask. Billy has taken refuge in sleepy town with a corrupt sheriff, and getting to him will be more difficult than even Dak could have anticipated. Then trouble comes knocking. Dak finds himself caught in the middle of something he wants nothing to do with, but can't walk away from. And when he is forced to defend an innocent woman, the blood on his hands could put everything he's worked for in jeopardy. This is the fourth installment in the Relic Runner Origin anthology of short stories.

The path to justice takes a disturbing detour. In his quest for vengeance, former Delta Force operative Dak Harper makes a startling discovery. Eight boys have gone missing in the Daniel Boone National Forest in the hills of Kentucky. And no one seems to know why. As Dak puts the pieces together, he comes to the sickening conclusion that his ex-teammate Nate Collier is behind the disappearances. And what Nate has planned for the boys is even worse. Now Dak is in a race against time to save the eight boys and settle the score with one of the men who left him for dead in Iraq. This is the fifth installment in the Relic Runner Origin anthology of short stories.

The path to revenge is never easy. Former Delta Force operative Dak Harper has one target left in his sights, but his old rival Bo Taylor won’t go down easily. With time against him, Dak races across the Atlantic and arrives in Portugal to find his friend Will strapped to an explosive device. The chain of events are set in motion. The gauntlet is laid. Can Dak Harper survives, save Will, and challenge Bo to one final battle to the death? Or will Dak lose everything and everyone he cares about.