Which Sci Fi Action Books Focus On Lone Soldiers Behind Enemy Lines?

In a world where the moon shattered and the strong devoured the weak, Neoma Solstice is nothing. A scentless Null. A ghost. A mistake. Until the day she saves a dying Lycan warrior with a touch, and her secret is revealed: she's Void-Born, the rarest mutation in existence. The same power that makes her invisible makes her invaluable—a living weapon that can cure the incurable Feral Rot plaguing the Lycan Ascendancy. Captured and collared, Neoma is forced to serve as "Tether" to Unit Vanguard: four elite soldiers on the brink of madness. Barzil, the ruthless Commander who sees her as a mission. Wolfy, the cold Tactician who sees her as a puzzle. Viggo, the feral Berserker who sees her as salvation. Guller, the fallen Priest who sees her as redemption. They own her contract. They control her life. They swear she's just a tool. But tools don't make their masters kneel. As Neoma's power grows, so does the threat she poses to the regime that enslaved her. When the prophesied Blood Moon rises, she'll have to choose: remain the Ascendancy's battery, or become the Void that devours them whole. Some bonds are forged in blood. Some in magic. Theirs was forged in desperation—and it might be the only thing strong enough to save a dying world. The Obsidian Covenant is a dark dystopian reverse harem romance featuring a morally gray FMC, four obsessive MLs, found family dynamics, enemies-to-lovers, rejected mate redemption, and a slow-burn that explodes into high heat. Perfect for fans of The Cruel Prince meets Den of Vipers in a post-apocalyptic wasteland. No choosing. No apologies. No mercy.

A mute Alpha, traumatized by his parents' murder, abandons his fated mate at first sight—convinced his silence makes him unworthy. He then embarks on a desperate cross-country hunt through rival packs to find her, only to face a vengeful hunter who forces him to break twelve years of silence under torture. Meanwhile, his fiercely loyal mate storms into enemy territory to rescue him, and his womanizing Beta discovers his own fated mate is a man. Packed with primal attraction, brutal action, and emotional redemption, this shifter romance redefines what it means to be Alpha.

In a deadly game of spies and dealers, trust is the ultimate weapon—and love the most dangerous betrayal. Sabrina is a cold, detached assassin, trained to infiltrate, manipulate, and eliminate without hesitation. But her latest mission is different: Viktor, a sadistic arms dealer with a dangerous empire, is her target. What begins as a professional operation soon turns into a psychological nightmare. Viktor has secrets of his own and plays a twisted game, pushing her to her limits with violence and manipulation. As Sabrina is drawn deeper into his dark world, she begins to lose herself, torn between completing the mission and the suffocating love Viktor offers. She must decide: escape or join him in the darkness.

Aiden, a skilled sniper who initially served in the border areas of the world's most conflicted, but was suddenly drawn to become the leader of the elite presidential guard, as well as to carry out a suicide mission that he never imagined before. In this mission, he must take care of a beautiful girl who is innocent, but dangerous because she is the daughter of one of the most well-known mafia in the world. Aiden's task is not only to protect the girl from those who want her life, he also has to keep the girl away from those who want all of her father's possessions in Cuba. Aiden's task to protect Calistha is getting heavier when sparks of desire between them begin to ignite. Aiden had never been with a woman before. And Calistha would be the first woman to be his weakness.

Book 1 - You'd better watch out. The danger is not just lurking in the dark. accompanies each of our steps. Instinct drives them.In a world full of monsters, there are those who are willing to risk their lives to save humanity from ruin. The hunters.After the trauma of her childhood, the ambitious young Grace decides that she will be one of those who hunt down the monsters and does everything she can to achieve this goal. She only wants one thing, to take revenge on the beings that her parents once snatched from her. But when Grace is forced to meet the grouchy Reese and his troubled brother Nick, she has to admit that the monsters of this world not only lurk in the dark shadows of the night. She is drawn into a vortex of intrigue, power struggles and greed for money and soon finds herself confronted with a creature that is more dangerous than anything known before.-------Book 2 - You'd better watch out. The danger is not just lurking in the dark. accompanies each of our steps. Instinct drives them.In a world full of monsters there are those who are willing to risk their lives to save humanity from perdition. The hunters.Finally, the years of hard work are paying off, Grace is officially a Venator and with Reese at her side she believes she can cope with anything that fate throws at her. But an unbelievable message from Jilin pulls the shadows from the past and stirs her thirst for revenge. Grace takes on this challenge and gets a stone rolling that cannot be stopped and slowly not only she begins to doubt her sanity.

Raised from an infant in discipline, Reza Kelson has been trained to be a cold-blooded killer. Nothing has stopped him when he's been ordered to an assignment, and nothing probably will. An agent for a secret branch of government, he kills and incinerates anything with the discipline of a sharp knife. But even though he's the best at what he does, tables turn when the government dumps Reza from bureaucracy, albeit with a place to be hidden away in. Now Reza finds himself struggling to integrate into the sleepy town of Lonewood. Raised without any form of love or compassion, he naturally comes off as rude and abrasive, and therefore drawing attention. And with other dumped agents, with some bent on settling scores, the entire situation could not be more risible and outrageous. Not to mention the strange boy, Dane Rochelle, who seems strangely possessive of him, and with Reza balances the life he never should have had.