Books like 'The Krinar Code'
Readers who enjoyed The Krinar Code by Emma Castle also liked the following books featuring the same tropes, story themes, relationship dynamics and character types.
futuristic science fiction vampires aliens military insta-love multicultural alpha male men in uniform fighters
-
Hunter Raze by Laurann Dohner
When her parents died in her youth, Anabel Brick—along with her sister, Jessa—was raised as an orphan of United Earth. While her sister became an Alien Research Specialist, Anabel’s skills were put to a different use. She’s a tool for U.E. and its military fleet…a spy…a killer. Her current mission also turns out to be her last... -
Callum by Honey Phillips
Can a weary alien warrior and a wary human widow learn to love again?The life of a warrior is all Callum has ever known, but after a long, meaningless war he is tired of fighting. Instead, he chooses to accompany his brothers in arms to a new life on a backwater planet and finds an unexpected peace in the hard work of restoring their isolated ranch...Categorized as:
aliens fated-mates insta-love non-human-hero m-f forced proximity science fiction futuristic -
Gracie's Touch by S.E. Smith
Gracie Jones was little more than a child when the Earth was invaded by an alien species. Escaping into the subway tunnels of New York City, she hid in fear of being captured. Discovered by four men who became her protectors, she fought alongside them and they became known as the Freedom Five...Categorized as:
insta-love military alpha male aliens possessive hero fated-mates non-human-hero m-f -
Hunter's Price by Lynnea Lee
XIK’NMy mission is simple. One: retrieve the shuttle. Two: don’t get caught.The tiny human female who answers my transmission is just a bonus. Every ounce of my being tells me to take her, touch her, and taste her. I earn her trust instead, and we talk for hours through our shuttles.When hostile humans turn on May and her friends, she steals the shuttle for herself...Categorized as:
dystopian aliens m-f fated-mates multicultural non-human-hero science fiction futuristic -
-
The Arcav Captain's Queen by Hope Hart
She wants her planet back... ... But all he wants is her. Forced to become a monster to survive her father’s cruelties, Saria wants only one thing: To convince the Arcav King to help her lead her people out of the darkness and into the light. She has no intention of mating anyone. Least of all Roax- the bossy bodyguard who the Arcav King ordered to be her shadow...Categorized as:
military aliens non-human-hero m-f science fiction futuristic creative-anatomy explicit-plentiful -
Paul's Pursuit by S.E. Smith
Paul Grove loves two things in the world more than anything else: his daughter, Trisha, and roaming the mountains and forests of Wyoming. One he would kill for, the other is who he is. He has spent his life devoted to his ‘little’ girl, even though she isn’t so little anymore. When she disappears, he focuses all of his hunting and tracking skills on finding her...Categorized as:
alpha male aliens independent heroine fated-mates non-human-hero m-f science fiction shapeshifters -
Rescued by her Alien Protector by Mina Carter
Prepared to put her life on the line, she didn’t expect to lose her heart. Vice President Madison Cole is used to having a target on her back. Being captured by aliens? An acceptable risk to get what she needs. What she didn’t count on was falling for the ‘enemy’, a handsome alien warrior with a hero’s heart...Categorized as:
military suspense aliens alpha male non-human-hero futuristic science fiction career professional -
Going Ballistic by Dorothy Grant
Rated: 4.63 of 5 stars · 8 ratingsWhen her plane tries to come apart at apogee during a hijack, ballistic airline pilot Michelle Lauden handles the worst day she could imagine. After getting down without losing any passengers or crew, though, she finds her troubles have just begun!The country she's landed in has just declared independence from the Federation... -
Dark Strength by Cynthia Sax, Amanda Kelsey
Rated: 4.56 of 5 stars · 9 ratingsThe Bigger They Are, The Harder They Fall. Balvan, the Refuge’s Gatekeeper, is huge, green, and has a reputation for crushing skulls. He’s a modified humanoid, genetically designed to be the ultimate warrior. One of a kind and considered monstrous by many, he never expects to find his mate, the one female meant for him... -
Legacy by Tana Stone
The Drexian Academy has four schools and four rules. Beware of the Assassins.Don't cross the Blades.Trust the Irons.The Wings go as one.Break them at your peril.Ariana is the first human instructor at the Drexian Academy and the first female to teach flight to cocky cadets. She’s the best Earth has to offer with a lot to prove...Categorized as:
aliens m-f competent heroine non-human-hero explicit-open-door futuristic dual-pov first-person-pov -
Holmes by Anna Hackett
Rated: 4.36 of 5 stars · 14 ratingsThe battle of survival against the invading aliens heats up…but Hell Squad never quits. General Adam Holmes’ life is dedicated to keeping his small band of survivors alive. On the run, with only Hell Squad and the other soldiers for protection, they are making their last dangerous drive to the secret stronghold of the Enclave... -
Sanctuary for the Alien Warrior by Honey Phillips
Can an alien warrior and an orphaned infant provide a new beginning for a lonely woman? Tired of relentless hours, arrogant clients, and endless demands, Barbara is ready to abandon her career as a corporate attorney for a simpler life. She doesn’t expect that life to involve an alien abduction, an abandoned baby, and an all-too-intriguing alien warrior with a very friendly tail...Categorized as:
aliens alpha male m-f fated-mates non-human-hero competent heroine science fiction futuristic -
The Arcav Guard's Female by Hope Hart
Rated: 4.31 of 5 stars · 16 ratingsShe’s on a quest for revenge… ...But he’s on a mission to make her his... After being abducted by aliens and rescued by the Arcav, all Peyton wants is revenge. Well, that, and a trip straight back home to Earth where she belongs. She’s not interested in the handsome Arcav Guard who stares at her so intently. Even if he does make her wish she’d met him before her captivity...Categorized as:
military aliens non-human-hero m-f science fiction futuristic length-short audiobook -
Twist of Fate by Regine Abel
First Officer Ghan has entered the final stages of the Taint, the deadly disease that kills most Xelixian males by the age of forty. He is determined to bring an elusive foe to justice before his body shuts down completely. When tragedy strikes a close ally, he finds his soulmate in an unexpected twist of fate. If only she had revealed herself sooner, she could have cured him... -
-
Home World by Erin Raegan
Rated: 4.22 of 5 stars · 21 ratingsPeyton I fell in love with an alien. Our world was invaded by carnivorous freaks and the Dahk swooped in and saved me and my friends. They want to save the Earth but we are our own worst enemy, or so I thought. The truth is we have no idea what's out there. Now I'm on my way to Home World. The Dahk's world. An alien world. I had no choice, it was taken from me...Categorized as:
aliens fated-mates non-human-hero m-f science fiction futuristic length-medium audiobook -
Faith, Part 3 by Grace Goodwin
Rated: 4.67 of 5 stars · 6 ratingsThe traitor within the Jax household has been found, and the repercussions are staggering, with Faith barely surviving and their mating destroyed. But Faith has always been unpredictable—just ask her sisters— and nothing will stop her from getting what she wants…and she wants Thor. Even if it kills her... -
Treasured by the Hunter: A Post-Apocalyptic Alien Romance by Lynnea Lee
Rated: 4.50 of 5 stars · 8 ratingsABBY Years after the end of the world, my life is falling apart again. This time, I know exactly how to survive in the bugpocalypse. What I don’t know is what to do with the brawny purple alien following me around. Harb’k isn’t just big and strong, with a protective streak a mile wide, but he’s funny as hell too...Categorized as:
aliens m-f fated-mates dystopian non-human-hero science fiction post-apocalyptic futuristic -
Of A Darker Void by G.S. Jennsen
Rated: 4.50 of 5 stars · 8 ratingsWhen man and machine are one and the same, death is no longer an inevitability. But in the darkest reaches of space, neither is life.Diplomat. Rebel. Fugitive.Nika Tescarav has lived many lives, though she no longer remembers most of them... -
Alien Cyberwarrior's Matched Mate by Mina Carter
Desperate, she signs her life away… to the scariest alien she’s ever seen.Losing her job is the last straw for Isabella. She’ll be kicked out of her apartment unless she finds more work, and living on the street is a very short death sentence. But no one’s hiring a woman from the bottom rung of life’s ladder and even the organ-rec companies shut the door in her face... -
Alien Commander's Mate by Mina Carter
Alone. Ill. She’ll do anything to find her kids. Both her children taken by the Lathar and her home destroyed in the process, Amanda Kallson is at her wits end and desperate. With nothing left to tie her to Earth, she’ll do anything to track down her daughters… even take an alien warriors crazy deal. It doesn’t hurt that said alien warrior is tall, ripped and as handsome as hell...Categorized as:
suspense aliens non-human-hero m-f futuristic science fiction length-novella explicit-open-door -
A Very Arcav Christmas by Hope Hart
Rated: 4.39 of 5 stars · 10 ratingsBabies, weddings, and Christmas... oh my! For the human women on Arcavia, there's plenty to celebrate during the holidays. Sure, the Grivath are a constant threat, but with a surprise wedding to plan, a baby on the way, and even a visit from Santa, the first Arcav Christmas is sure to be incredible... -
Bound by Tana Stone
Rated: 4.30 of 5 stars · 13 ratingsShe’s been given a choice. Mate with the part-cyborg alien who abducted her. Or die. For Shreya, taking an alien for a mate was never in the cards. As one of the human women who rejected the idea of being a tribute bride to the Drexian warriors, she was just fine without a big, hulking alien. Even if they are gorgeous... -
Tracking Trisha by S.E. Smith
Trisha Grove enjoyed her job as a pilot for Boswell International but realizes something is still missing from her life – her family. She is ready to call it quits and head back home to Wyoming where her father lives. She never expected her last flight for Boswell would end with an unplanned trip out of this world... -
Alien Duke's Fated Mate by Mina Carter
She's the best pilot in the galaxy... He's an arrogant alien dukeMajor Zara Reid has one mission - prove human pilots can fly alongside the alien Latharians. She didn’t expect their arrogant Lord Starfighter to try and undermine her at every turn... -
-
Mercenary Abduction by Eve Langlais
All this mercenary wants is to kill and loot his way to fame and fortune, but his plans change when a human accidentally steals his heart. Makl is looking to become the greatest mercenary the universe has known. In true family tradition, he leaves a trail of mayhem and bodies wherever he goes. steals the most priceless of items, ravishes females left and right... -
Roth by Anna Hackett
Rated: 4.21 of 5 stars · 15 ratingsIn the aftermath of a deadly alien invasion, a band of survivors fights on… Roth Masters is a protector to the bone. Driven by the losses of his past, he fights side-by-side with Hell Squad to protect the human survivors of the alien invasion. As leader of Squad Nine, he and his team are known for their perfect timing in a firefight... -
Manu by Anna Hackett
Rated: 4.28 of 5 stars · 11 ratingsAs the battle against the invading aliens intensifies, a group of bad boy bikers and mercenaries will stand and fight for humanity’s survival… When former berserker Manu Rahia lost his leg on a mission, he was forced to leave his squad... -
Niko by Anna Hackett
Rated: 4.23 of 5 stars · 13 ratingsIn the aftermath of a deadly alien invasion, a band of survivors fights on… Mackenna Carides is tough, strong, and excellent at her job as second-in-command of Squad Nine. She often works side by side with Hell Squad on some of the toughest missions to fight back against the alien raptors. Now she’s helping the survivors of Blue Mountain Base settle into their new home at the Enclave... -
Hemi by Anna Hackett
Rated: 4.30 of 5 stars · 10 ratingsIn the middle of an alien invasion, a big, tough, tattooed former mercenary is finally going to chase down his woman. Camryn McNab knows love is a lie. Okay, maybe not for everybody--her fellow soldiers on Squad Nine have managed to fall in love in the middle of a vicious alien attack. But it's not for her. She comes from two people incapable of love...Categorized as:
aliens military independent heroine m-f science fiction futuristic length-short audiobook -
Levi by Anna Hackett
Rated: 4.30 of 5 stars · 10 ratingsIn the middle of an alien invasion, a bad boy berserker collides with a spunky mechanic on a dangerous sabotage mission. Levi King has always lived rough. Raised by a biker dad, he fought for everything he had—including being president of the Iron Kings motorcycle club. But when the aliens invaded, he lost it all...Categorized as:
aliens dystopian military independent heroine m-f science fiction futuristic length-short -
Handling the Hybrid by Evangeline Anderson, Reese Dante
Rated: 4.30 of 5 stars · 10 ratingsKindred Tales: Handling the Hybrid Too much to handle... Tandy has a big problem. She stands to inherit a huge estate and the title of her late aunt but in order to prove herself worthy of the exulted position and the money that comes with it, Tandy must train her first slave...Categorized as:
multicultural aliens fated-mates non-human-hero humor science fiction futuristic length-medium -
Odin by Tasha Black
Rated: 4.33 of 5 stars · 9 ratingsShe swore she would never love again, but this dragon warrior's heat might just melt her resolve...Liberty is a widow who's come to Lachesis for a chance to raise a child and get a fresh start on a far away frontier moon. But she isn’t ready for the baby to come with Odin, an Invicta dragon warrior who has sworn to protect the child with his life...Categorized as:
aliens fated-mates alpha male multicultural insta-love non-human-hero shapeshifters grumpy sunshine -
Torrvok by Alana Khan
Rated: 4.60 of 5 stars · 5 ratingsTorrvok, a cunning and skilled warrior, protects Sierra from enemies who hunt them without mercy. But can he keep her safe from the raging beast writhing under his skin?SierraHe rescued me—twice—then protected me on a dangerous chase across a continent.Despite his warnings not to trust him, when we’re together I’m only aware of the pounding desire his presence ignites... -
Taming Ryock by Sara Page, Sean Moriarty
My life has become a living nightmare… Abducted. Stolen from Earth. I wake up in a strange alien laboratory to discover my new alien overlords plan to use me in a breeding experiment. The alien they want me to breed with? Yeah, he’s blue, he’s mean, and he’s packing some seriously scary alien ‘equipment’. There’s no way I can survive the experiment... -
-
Finn by Anna Hackett
Rated: 4.22 of 5 stars · 12 ratingsIn the aftermath of a deadly alien invasion, a band of survivors fights on… For Hawk pilot Finn Erickson, flying is in the blood. Since the aliens decimated the planet, he spends most of his time flying Hell Squad into combat. With communication to other survivor bases cut off, he has no idea if his family is still alive and feels their loss keenly...Categorized as:
aliens military dystopian independent heroine m-f futuristic science fiction length-novella -
Scorch Road by Toby Neal, Emily Kimelman
Rated: 4.23 of 5 stars · 11 ratingsA new romantic action adventure for fans of romance thriller suspense and family romance series! One of six Italian brothers and a sister, JT Luciano is a widowed environmental biologist with a touch of the Sight who is preparing for an apocalyptic event he knows is coming... -
Cruz by Anna Hackett
Rated: 4.12 of 5 stars · 19 ratingsBattle-hardened soldier Cruz Ramos is running on empty. As second-in-command of the deadliest commando squad fighting the invading aliens, he doesn't know why he’s fighting anymore. He’s seen too much destruction, devastation, and far too much death. Still, every day he goes out to protect those humans left, and every day the growing numbness threatens to take over...Categorized as:
dystopian aliens military alpha male independent heroine m-f science fiction futuristic -
Razor's Traitorous Heart by S.E. Smith
Kali Parks is a shadow in the war between two factions that are fighting to gain control of Chicago. Born and raised on the streets, she stands as a silent sentinel at her brother’s side as he battles to gain control. She will do whatever it takes to bring peace to those she has pledged her life to protect, including fighting against the creatures that came to their world almost six years before... -
Noah by Anna Hackett
Rated: 4.18 of 5 stars · 13 ratingsThe battle of survival against the invading aliens heats up…but Hell Squad never quits. Tech genius Noah Kim works day and night to keep the survivors at Blue Mountain Base with lights, power and hot water. He’s also working on a top secret project to help keep them safe. He’s tired, stressed and under pressure—and one woman adds to it all...Categorized as:
dystopian aliens military independent heroine m-f futuristic science fiction cold heroine -
Bonded To The Alien Centurion by Mina Carter
Behind ‘enemy lines’ the last thing she expects is a sexy alien warrior determined to make her his… When things screw up in diplomatic talks with the Lathar Dani Black finds herself lined up for the one thing every dyed in the wool soldier dreads… a diplomatic function... -
Undone by Wendy Higgins
Rated: 4.17 of 5 stars · 13 ratingsUSA Today and New York Times bestselling author, Wendy Higgins, brings you the gripping, sensual conclusion to her apocalyptic trilogy. Amber Tate never dreamed their heart-wrenching escape from the enemy’s attack would lead them to the most beautiful place she’s ever seen, marred by one ugly fact; it’s under enemy control...Categorized as:
dystopian military aliens suspense science fiction futuristic new adult length-medium -
Gabe by Anna Hackett
Rated: 4.12 of 5 stars · 17 ratingsFor a limited time, you can get the latest Phoenix Adventures novella, On a Cyborg Planet, free. Visit here to find out more > bit.ly/annahackettbooks (paste into your browser) Hell Squad soldier Gabe Jackson has lost everything that mattered, including his twin brother. Now he just wants to kill the invading aliens anyway he knows how…and he knows a lot of ways...Categorized as:
dystopian aliens military independent heroine m-f science fiction futuristic cold heroine -
Alien General's Fated by Vi Voxley
Rated: 4.19 of 5 stars · 11 ratingsThis general will never lose... This is a full 100 k sci-fi romance novel, featuring a growly Alien Alpha general and a feisty, curvy human woman going against all the odds. It is part of a series but can and should be read as a standalone novel! No cheating and a guaranteed HEA! Aria Harris has been fighting for recognition all her life...Categorized as:
aliens military alpha male fated-mates science fiction futuristic political-intrigue length-epic -
Shaw by Anna Hackett
Rated: 4.14 of 5 stars · 14 ratingsIn the aftermath of a deadly alien invasion, a band of survivors fights on… Hell Squad sniper Shaw Baird is a man on a mission. His squad is his family and now the invading aliens have done the unforgivable…taken one of his team. Claudia Frost—soldier, friend, and all-round badass—is running on borrowed time...Categorized as:
aliens dystopian military m-f futuristic science fiction warrior-heroine length-short -
-
Ash by Anna Hackett
Rated: 4.22 of 5 stars · 9 ratingsIn the middle of an alien invasion, will the bad boy berserker catch the geeky tech genius? Computer genius Marin Mitchell is doing her part to help humanity survive the raptor invasion, working tirelessly to decrypt alien data. She spends her days working and drooling over a certain tattooed, biker berserker from Squad Three. But Marin knows the rules: geeks do not snag sexy bad boys... -
Edge of Insanity: The Alliance Book 6 by S.E. Smith
Rated: 4.22 of 5 stars · 9 ratingsScorching hot and sexy stories set in science fiction and paranormal worlds that come alive in your hands. Internationally acclaimed for her writing, S.E. Smith's stories are unapologetic happily-ever-afters. They are also full of alpha heroes, heroines with a brain, action, adventure, and humor...Categorized as:
military multicultural aliens non-human-hero science fiction futuristic length-medium audiobook -
Gift of the Beast: Holiday Starrs by Sonia Nova
Rated: 4.22 of 5 stars · 9 ratingsGarr is a wreck. His years of torture has left him almost unable to speak or interact normally. He tries and tries to get back into the military where life is simple and regulated, but he's denied because of his mental trauma. Shea is a single mom who has moved in next door where she is close to family... -
Gravel and Grit by Stacy Jones
Zaek is losing hope after waiting centuries for rescue, but the time has finally arrived. The lost emergency beacon has fallen from orbit and gone active. All he needs to do to get off this damn planet named Earth is find it and get to the pick up location in time... -
Romancing the Alpha: An Action-Adventure Romance Boxed Set by Zoe York, Ruby Lionsdrake
Rated: 4.25 of 5 stars · 8 ratingsA multi-author anthology of action-packed adventure novellas. Let the adrenaline flow! ***ZOE YORK, RUBY LIONSDRAKE, ZARA KEANE, ANNA HACKETT, EMBER CASEY, ANNA LOWE, SADIE HALLER, LYN BRITTAN, LYDIA ROWAN, A.J... -
Kol: Alien Abduction Romance by Vi Voxley
Rated: 4.25 of 5 stars · 8 ratingsForever is no time at all, sometimes. Jackie Hooper is all out of time. An incurable illness at her side, she's trying to make the best of the opportunities she has left. Getting abducted by a Nayanor warlord was not on that list of things to do. But then again, spending your last moments with the hottest man in the universe can't be all bad..
Find out more about romance.io.
Get recommendations by genres & tropes
Use the romance book finder to mix and match over 100 content keywords to find the books that match your preferences

Or - use our amazing romance book finder to get recommendations based on your favorite content tropes and themes. Mix and match at will.