Reaper Series by Eleri Stone

Abby is a Ranger, part of an elite group who defend the border against Reapers—humans infected with a parasite that turns them into mindless cannibals. Rangers are immune to Reaper infection, and as one of the only female Rangers, Abby is expected to settle down and breed more Rangers—a fate she's keen to avoid. When she's ambushed on the plains, she's ready to go out with guns blazing—until a mysterious, handsome cowboy rides to her rescue... moreAbby is a Ranger, part of an elite group who defend the border against Reapers—humans infected with a parasite that turns them into mindless cannibals. Rangers are immune to Reaper infection, and as one of the only female Rangers, Abby is expected to settle down and breed more Rangers—a fate she's keen to avoid. When she's ambushed on the plains, she's ready to go out with guns blazing—until a mysterious, handsome cowboy rides to her rescue. Jake has his own motives for helping Abby, beyond aiding a damsel in distress. He's a Reaper, and while he's learned to wrest control of his mind from the parasite, the effects won't last without a permanent cure. And he needs Abby to get it. Abby and Jake are natural enemies and unlikely partners. But when their search reveals a conspiracy between Reapers and the rich industrialists who own the mountain cities, they must work together to find the cure—or lose the border, and each other, forever. less

Before the cure, Lieutenant Lyle Dalton's job was simple: kill the Reapers. Now, under orders to inject all captured flesh eaters with the serum that restores their humanity, his Rangers at Fort Dougan face entirely new dangers. Someone wanted the Reaper cure badly enough to spill blood for it, and Lyle needs to steal it back if he hopes to hold the border. Jane Fisher escaped Scraper crime boss Gideon Moore with only the clothes on her back... moreBefore the cure, Lieutenant Lyle Dalton's job was simple: kill the Reapers. Now, under orders to inject all captured flesh eaters with the serum that restores their humanity, his Rangers at Fort Dougan face entirely new dangers. Someone wanted the Reaper cure badly enough to spill blood for it, and Lyle needs to steal it back if he hopes to hold the border. Jane Fisher escaped Scraper crime boss Gideon Moore with only the clothes on her back. What he took from her can never be replaced, but her new home at Fort Dougan is the first safe one she's known. Or was, until the remaining supply of serum was stolen, flown high into the mountains on Gideon's command. Serving as Lyle's guide through Scraper territory means revisiting her own personal hell, but it's also an opportunity—for closure or revenge, Jane isn't quite sure. Beautiful, proud and haunted, Jane is a temptation Lyle's worked hard to avoid. The mountains are the last place she needs to be. But if Jane can find the courage to face down a man like Gideon for the sake of the fort, no force on earth will keep Lyle from her side. Don't miss Reaper's Touch, available now! 95,000 words less