Books like 'Ruthless'

Readers who enjoyed Ruthless by Kate Rudolph also liked the following books featuring the same tropes, story themes, relationship dynamics and character types.

futuristic  sc-fi  romance  supernatural  action / adventure  aliens  paranormal  suspense  steamy  secrets 

  • Born of Legend by Sherrilyn Kenyon

    Born of Legend by Sherrilyn Kenyon

    Rated: 4.55 of 5 stars
    · 30 ratings
    It is in the darkest hours of a universe’s past that their legends are born and their heroes rise…No one knows exactly how much heart they have until their mettle is put to the hazard and they reach the lowest point of hell. There, they have only two choices. Lie down and die. Or find the strength to push themselves to their feet and fight back with everything they have...
  • Age of Deception by T.A. White

    Age of Deception by T.A. White

    Rated: 4.55 of 5 stars
    · 30 ratings
    War hero and daughter to two Houses, Kira is just beginning to learn how deep the rabbit hole goes. Agreeing to accompany her father’s people back to their homeworld, Kira Forrest prepares for the fight of her life. She’s agreed to undertake the Trial of the Broken, a rite of passage every member of her father’s House must pass...
  • Hero by Anna Hackett

    Hero by Anna Hackett

    Rated: 4.53 of 5 stars
    · 26 ratings
    Fighting for love, honor, and freedom on the galaxy’s lawless outer rim… Raised from birth to be a soldier, Kace Tameron is a disciplined, military-trained gladiator. He is on contract to the Kor Magna Arena to hone his fighting skills on the blood-soaked arena sand and then return to the military. He lives for one thing: to protect his planet, and on his world, love is forbidden...
  • Tane by Anna Hackett

    Tane by Anna Hackett

    Rated: 4.70 of 5 stars
    · 15 ratings
    As the battle against the invading aliens reaches its endgame, a group of bad boy bikers and mercenaries will stand and fight for humanity’s survival…Tane Rahia is good at one thing—fighting. Before the alien invasion, he fought as a mercenary in the worst jungle hellholes...
  • Born of Fire by Sherrilyn Kenyon

    Born of Fire by Sherrilyn Kenyon

    Rated: 4.36 of 5 stars
    · 36 ratings
    In a universe where assassins make the law, everyone lives in fear--except for Syn. Born of an illicit scandal that once rocked a dynasty, he always knew how to survive on the bloodthirsty streets. But that was then, and the future is now…Syn was raised as a tech-thief until his livelihood uncovered a truth that could end his life...
  • Escalation by Adrienne Lecter

    Escalation by Adrienne Lecter

    Rated: 4.42 of 5 stars
    · 12 ratings
    Is anybody out there? After a long winter spent hunkering down in Wyoming, Bree, Nate, and the gang are back on the road. The harsh temperatures up in the northern regions might have decimated the undead scourge somewhat, but soon they have to face reality: it’s not just zombies that are out there to hunt people down and kill them...
  • Loving Zorn  (Zorn Warriors, #1-2) by Laurann Dohner

    Loving Zorn (Zorn Warriors, #1-2) by Laurann Dohner

    Rated: 4.29 of 5 stars
    · 14 ratings
    Ral's WomanAriel never knew aliens existed until she finds herself kidnapped and taken from Earth. When the Anzon declare humans useless, she learns her fate-prize for the winner of a brutal fight between large, muscled alien men. Ral is a Zorn warrior. He has also been kidnapped by the Anzon, along with his crew. Forced into slavery, he's got one thing on his mind-freeing his people...
  • Nomad Mortis by Craig Martelle, Michael Anderle

    Nomad Mortis by Craig Martelle, Michael Anderle

    Rated: 4.52 of 5 stars
    · 15 ratings
    They say that behind every great man is a great woman…but what if that woman is a Werewolf?The reviews for the Terry Henry Walton Chronicles are overwhelming.“Another great T.H. Walton story, I can't wait for the next one! This one has it all drama, suspense, comedy, love, and a healthy dose of action. Pick it up and enjoy!”“The story line with the dynamic duo keeps you on the edge of your seat...
  • Cassandra's Challenge by M.K. Eidem

    Cassandra's Challenge by M.K. Eidem

    Rated: 4.25 of 5 stars
    · 16 ratings
    Alternative cover edition ASIN B00CKXWOM2Cassandra Chamberlain has always stood out. It's hard not to at 6’1” and 165 pounds with jet black hair and sapphire blue eyes. And if that wasn’t enough she is also brilliant, graduating from Harvard at fifteen, teaching at MIT at nineteen and up for the prestigious Magellan Award at twenty five. But she’s never really fit in...
  • Demons Don't Duel by Hannah Walker

    Demons Don't Duel by Hannah Walker

    Rated: 4.50 of 5 stars
    · 6 ratings
    Dea's life is all about his role as a commander of a battlecruiser. At the height of his career, he can take command of any ship he wants, he's well respected, and surrounded by friends and family. Yet, something has been missing for a long time. Part of his soul was left behind at the academy, with someone he walked away from all those years ago. Uri loves control...
  • Saven Denial by Siobhan Davis

    Saven Denial by Siobhan Davis

    Rated: 4.38 of 5 stars
    · 8 ratings
    Sadie has been kidnapped by the Tor, the vindictive alien race who destroyed Thalassic City. As her past, present, and future collides, her worst nightmare looks set to become her shocking new reality.A deliberate pawn in leader Griselda’s vengeful game, Sadie is horrified to learn the truth about her heritage and the destiny that’s already been mapped out for her...
  • Big Dicker by K.C. Cross, J.A. Huss

    Big Dicker by K.C. Cross, J.A. Huss

    Rated: 4.38 of 5 stars
    · 8 ratings
    Welcome to Mighty Minions Resort. Jimmy’s personal hell. All Jimmy wants is a booster shot of DNA scrambler so he never has to find his one-true soul mate. But life rarely goes the way you plan it. After dropping Xyla off on Blue Sand Beach for a little vacay with her sexbot girlfriends the Big Dicker has to make an emergency landing on the demon-themed Mighty Minions Resort...
  • The Rebel's Mate by C.W. Gray

    The Rebel's Mate by C.W. Gray

    Rated: 4.38 of 5 stars
    · 8 ratings
    Welcome back to Charybdis Station and the crew of the Blue Solace: (Seventh Book in the series) Finn Sterling is still adjusting to becoming the lieutenant of the blue fleet of Charybdis Station. As an orphan on Cardinal Hold, he never imagined he would have a position of authority as an adult and the trust his friends put in him makes failure impossible...
  • Reservation 1 by Krista Street

    Reservation 1 by Krista Street

    Rated: 4.30 of 5 stars
    · 10 ratings
    To save the only man she's ever loved, she must pay a price.When Dr. Meghan Forester, a young researcher, helps create a vaccine for the deadly Makanza virus, her goal to annihilate the virus is coming true.But the question remains - what becomes of the Kazzies? They'll always be infected carriers of the terrifying virus...
  • Guarded by the Snake: Monster Security Agency by Layla Fae

    Guarded by the Snake: Monster Security Agency by Layla Fae

    Rated: 4.30 of 5 stars
    · 10 ratings
    She stole her way into my cold, serpent heart like a thief in the night.The tiny human hires me to shield her from the vengeance of a powerful organization. There’s nothing wrong with that, except she stole from them, got caught, and now I have to clean up her mess. Add to that her incessant chatter, and I’m in for the most unpleasant job in my career...
  • Cyborg Seduction by Grace Goodwin

    Cyborg Seduction by Grace Goodwin

    Rated: 4.25 of 5 stars
    · 12 ratings
    There is nowhere to hide from a Hunter determined to find his mate. Single mother Lindsey Walters is a blogger and the love of her life is her four-year-old son, Wyatt...
  • Defending the Galaxy by Maria V. Snyder

    Defending the Galaxy by Maria V. Snyder

    Rated: 4.25 of 5 stars
    · 12 ratings
    Year 2522. Oh. My. Stars.Junior Officer Ara Lawrence here, reporting for duty. Again. It's situation critical for the security team and everyone in the base - including my parents - with a new attack from the looters imminent, a possible galaxy-wide crime conspiracy and an unstoppable alien threat. But this all pales in the face of my mind-blowing discovery about the Q-net...
  • Mission: Planet Biter by Laurann Dohner

    Mission: Planet Biter by Laurann Dohner

    Rated: 4.21 of 5 stars
    · 14 ratings
    When his Veslor grouping answers a distress call on planet Biter, Roth discovers a sole survivor. The little female isn't rational and latches onto him like a lifeline. That surprises Roth, since most humans fear him. This one won't let him go, but he must resist his desire for her. It's the only honorable thing to do...
  • Nomad's Force by Craig Martelle, Michael Anderle

    Nomad's Force by Craig Martelle, Michael Anderle

    Rated: 4.47 of 5 stars
    · 13 ratings
    They say that behind every great man is a great woman…but what if that woman is a Werewolf?  THIS IS A MONSTER BOOK - We have taken pains to price the book low.  (Craig is crying in the corner, don't mention I reduced it to what you see). The readers LOVE the Nomad! “This series is one of the best I’ve ever read...
  • Hemi by Anna Hackett

    Hemi by Anna Hackett

    Rated: 4.40 of 5 stars
    · 15 ratings
    In 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...
  • Ash by Anna Hackett

    Ash by Anna Hackett

    Rated: 4.40 of 5 stars
    · 15 ratings
    In 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...
  • Dom by Anna Hackett

    Dom by Anna Hackett

    Rated: 4.45 of 5 stars
    · 13 ratings
    As the battle against the invading aliens intensifies, a group of bad boy bikers and mercenaries will stand and fight for humanity’s survival… Squad Three berserker Dom Santora has an ugly past he can’t forget. Born and raised in the darkness, he spent his life before the alien invasion as a Mafia enforcer...
  • Hunter Raze by Laurann Dohner

    Hunter Raze by Laurann Dohner

    Rated: 4.42 of 5 stars
    · 14 ratings
    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...
  • Fire and Ice by Sherrilyn Kenyon

    Fire and Ice by Sherrilyn Kenyon

    Rated: 4.35 of 5 stars
    · 17 ratings
    FIRE & ICE - Originally published in a stand alone ebook in 1998. Currently available in the OUT OF THIS WORLD anthology that features all the short stories Sherri wrote for Penguin. Livia is a Vistan princess who is to be married to an ambassador from a neighboring galaxy--a brutal man, many years her senior...
  • Seduced by the Alien Warrior by Hope Hart

    Seduced by the Alien Warrior by Hope Hart

    Rated: 4.36 of 5 stars
    · 16 ratings
    Okay, so he’s not really the devil, but he may as well be. The Tribe King is gorgeous, arrogant, and devious. He refused to hand over crucial information to help us find our friends until I agreed to stay with him. For a year.As far as I’m concerned, deals made under duress don’t count. Anyone who would demand such a thing in exchange for our friends’ freedom simply can’t be trusted...
  • Champion by Anna Hackett

    Champion by Anna Hackett

    Rated: 4.25 of 5 stars
    · 24 ratings
    Fighting for love, honor, and freedom on the galaxy’s lawless outer rim…Space marine Blaine Strong enjoyed being a composed, controlled member of space station security…until he was abducted by alien slavers. Forced into underground fight rings and pumped full of drugs, he’s now seething with anger and out for revenge...
  • Reclamation by Erica Stevens

    Reclamation by Erica Stevens

    Rated: 4.37 of 5 stars
    · 15 ratings
    The highly anticipated conclusion to the bestselling Ravening Series. The first book in this series, Ravenous, is free. Hunted by alien enemies and desperate to survive the invasion, Bethany and Cade are forced into situations they never imagined were possible...
  • Plundered by Tana Stone

    Plundered by Tana Stone

    Rated: 4.25 of 5 stars
    · 23 ratings
    My sister gave herself to the raider warlord to save me. Now I’m hunting him down and getting her back.I’ve never forgiven myself for letting that brute drag her off my ship, and I’ve done nothing but search for his horde of warships since he let my ship go free...
  • Jo's Journey by S.E. Smith

    Jo's Journey by S.E. Smith

    Rated: 4.24 of 5 stars
    · 24 ratings
    Jo Strauss was committed to two things in her life – her family and her life as an acrobat/high-wire performer. She takes both very serious. Her life was orderly, in control, and she was finally settling down in one place so she could spend more time with her parents instead of moving all over the world every few weeks...
  • Recruiting Measures by Viola Grace

    Recruiting Measures by Viola Grace

    Rated: 4.33 of 5 stars
    · 6 ratings
    A life of pain is swapped for a rabid urge to collect experiences. Being a recruiter with an elusive species is just as much fun as it sounds.Kyna was shocked when she got an invitation to the Reset Project. She was even more shocked when she found out that her nephew had found her application from decades earlier and forward it to the Volunteer Project...
    Categorized as:
    aliens  paranormal  steamy  action-adventure  adult  book  fae  fiction
  • Break the Mold by Viola Grace

    Break the Mold by Viola Grace

    Rated: 4.33 of 5 stars
    · 6 ratings
    Programming nanites isn’t a hobby; it is in her blood. Time to break the mold and see what she can do. Lucky was holding the bomb that blew the staff of Adaptation Base to pieces. Instead of suffering from the blast, the acid in the device consumed her soft tissues...
  • Twisting Sanity by Viola Grace

    Twisting Sanity by Viola Grace

    Rated: 4.33 of 5 stars
    · 6 ratings
    When her body isn’t hers to command, Windy has to find ways to defend herself. Windy broke her spine in the attack, and she was taken from Adaptation Station and sold to the Splice. Her destiny was to act as their communication conduit. She hated the idea of destiny. When Alphy sent a hunter to come get her, he is shocked by her condition...
  • Pilot In Command by Viola Grace

    Pilot In Command by Viola Grace

    Rated: 4.33 of 5 stars
    · 6 ratings
    Helen needed more from life as a pilot than the Alliance could offer. When a handsome Azon offers her a new position, she can’t say no, to anything.Helen has enjoyed her tenure as an Alliance pilot, but working with unpredictable crews is wearing on her nerves. When an incident of defense of the innocent via mutiny ends her career, controlling warships is over...
  • Inferno by Cara Bristol

    Inferno by Cara Bristol

    Rated: 4.33 of 5 stars
    · 6 ratings
    He's an alien who looks like a devil. She's a church secretary. A match made in heaven...or?Take nothing at face value. That’s Geneva Walker’s motto in life. But when seven feet of devilishly handsome male complete with horns and a tail strolls into the church where she works as a secretary—even a hardcore nonbeliever would jump to conclusions...
  • Holmes by Anna Hackett

    Holmes by Anna Hackett

    Rated: 4.32 of 5 stars
    · 17 ratings
    The 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...
  • Into the Light by Anna Carven

    Into the Light by Anna Carven

    Rated: 4.21 of 5 stars
    · 27 ratings
    Abbey When your mate is a Kordolian General who's betrayed the most vicious Empire in the Universe, things tend to get a little heavy from time to time. For the last six months, Tarak's had to divide his time between Earth and space, dealing with various... problems. But he's home now, and he tells me he's not going anywhere...
  • Adored by the Alien Assassin by Mina Carter

    Adored by the Alien Assassin by Mina Carter

    Rated: 4.27 of 5 stars
    · 20 ratings
    Go to earth. Find a woman. Bring her back. Simple. The Emperor’s Shadow, Xaandryn, is not a warrior. He’s something else, whatever else, the Emperor needs him to be. An assassin, and, it seems… now he’s a delivery boy...
  • Roth by Anna Hackett

    Roth by Anna Hackett

    Rated: 4.31 of 5 stars
    · 17 ratings
    In 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...
  • Salvation by Laurie Roma

    Salvation by Laurie Roma

    Rated: 4.20 of 5 stars
    · 10 ratings
    Officer Skylar Aris is a woman with a troubled past. As a Class-A Conduit, she is beautiful and deadly, making her stand out among the rest of the elite soldiers. She has worked hard to succeed as one of the only female interrogators in the Security and Interrogation Division, but everything she has dreamed of is put in jeopardy when she’s given an ultimatum that will change her fate...
  • Her Mate and Master by Renee Rose

    Her Mate and Master by Renee Rose

    Rated: 4.20 of 5 stars
    · 10 ratings
    “I’m your master. When I give you an order, you obey.” Talia didn’t escape her slave master only to be shackled again. Not even by a sexy male built of solid muscle who does wicked things with his fingers and tongue. Not even one of her own species who says he knows her father--the father she doesn’t remember...
  • Talented by Alexandra Moody

    Talented by Alexandra Moody

    Rated: 4.20 of 5 stars
    · 10 ratings
    Seventeen-year-old Elle Winters gave up everything for one shot at saving her closest friend. But though she may have escaped the ARC and found her way to the surface, Elle is no closer to finding Sebastian and stranded in a world where she doesn’t belong...
  • Reaver's Quest by Elin Wyn, Starr Huntress

    Reaver's Quest by Elin Wyn, Starr Huntress

    Rated: 4.20 of 5 stars
    · 10 ratings
    He was unexpected.No.Our ship getting blown up was unexpected.Crashing on a planet filled with murder-goats was unexpected.Being rescued by a copper skinned, winged hunk with golden eyes and not wearing much more than a leather kilt and a weapon harness was so freaking miraculous that I wondered if I’d actually fallen off that cliff...
  • Griff by Anna Hackett

    Griff by Anna Hackett

    Rated: 4.42 of 5 stars
    · 12 ratings
    As the battle against the invading aliens intensifies, a group of bad boy bikers and mercenaries will stand and fight for humanity’s survival…Squad Three berserker Griff lived through hell long before the alien invasion. Once, he’d been a dedicated cop, but then in a gut-wrenching betrayal, he ended up behind bars in a supermax prison...
  • His Human Rebel by Renee Rose

    His Human Rebel by Renee Rose

    Rated: 4.17 of 5 stars
    · 12 ratings
    CONSCRIPTED BY AN ALIEN ARMY, SHE PLOTS HER ESCAPE… Cambry doesn’t believe the aliens’ propaganda for one minute. The Zandians may have saved her from one death, but they planned to send her to another. She bides her time, waiting for her chance to get away and find her brother, enslaved by a different species...
  • Mated to the Cyborgs by Grace Goodwin

    Mated to the Cyborgs by Grace Goodwin

    Rated: 4.17 of 5 stars
    · 12 ratings
    FBI Agent Kristin Webster has spent the last eight years tracking and taking down the worst of humanity. She's seen to much to believe she could ever trust a human man, but the promise of a perfect match through the Coalition's Interstellar Brides Program has her settling into the testing chair to be matched to her alien mate...
  • Dark Planet Warriors: Escape by Anna Carven

    Dark Planet Warriors: Escape by Anna Carven

    Rated: 4.17 of 5 stars
    · 12 ratings
    Abbey Ever since we left the Fleet Station, Tarak has been his usual cryptic self. For some reason, he’s keeping everything very low-key, to the extent that we’re trying to sneak in to Kythia. Something’s up, and he’s not telling me anything. Every time I try to get answers, he distracts me with his stupid sexiness. Stupid sexy, silver, stubborn, insistent alien...
  • Unknown by Wendy Higgins

    Unknown by Wendy Higgins

    Rated: 4.14 of 5 stars
    · 14 ratings
    In this first installment of NY Times bestselling author, Wendy Higgins's debut New Adult series, a frighteningly realistic apocalyptic America is brought to life, entwined with searing romantic tension that will leave you eager for more. *** Amber Tate believes the worst thing she'll suffer in life is dealing with the unrequited love she feels for her brother's best friend, Rylen Fite...
  • Finn by Anna Hackett

    Finn by Anna Hackett

    Rated: 4.33 of 5 stars
    · 15 ratings
    In 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...
  • Shaw by Anna Hackett

    Shaw by Anna Hackett

    Rated: 4.31 of 5 stars
    · 16 ratings
    In 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. Shaw has vowed to bring her home, whatever it takes..
  • Devlin by Anna Hackett

    Devlin by Anna Hackett

    Rated: 4.35 of 5 stars
    · 14 ratings
    In the aftermath of a deadly alien invasion, a spy and a soldier find themselves locked in an alien cage and told…mate or die. A covert mission gone horribly wrong. Cool, composed spy, Devlin Gray is used to bad situations, but locked in the bowels of an alien facility with tough, sexy soldier Taylor and told to mate is bad. Very bad...
Fantastic book recommendations by book lovers for book lovers.
Find out more about thebooknaut.com.



Looking for more inspiration? Enter another book title to get more suggestions on what to read next.


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