Margins
Moon Shifter book cover 1
Moon Shifter book cover 2
Moon Shifter book cover 3
Moon Shifter
Series · 10 books · 2012-2016

Books in series

Alpha Instinct book cover
#1

Alpha Instinct

2012

Ana Cordona has been a strong leader for the lupine shifters who survived after all the males and most of the females in her pack were mysteriously poisoned. As tough as she is, with no Alpha male, the pack is vulnerable to the devious shifter Sean Taggart, who wants to claim both their ranch and Ana as his own. When Connor Armstrong comes back into her life, promising protection, it's almost enough to make Ana forget how he walked out on her before—and reluctantly accept his offer to mate. The minute Connor sees Ana again, it reawakens a raw hunger. He must have her for his bondmate—his wolf cries out for it. But his human side knows he must proceed with caution because of their complicated past. If he is to truly have her body and soul, he must go beyond his burning desire and win back her heart. Whatever it takes, he is determined not to leave her side again. But Taggart and his rival pack are not their only enemies. A human element in town is targeting shifters. Their plan not only threatens Ana and Connor's future, but the lives of the entire pack...
Lover's Instinct book cover
#1.5

Lover's Instinct

2012

Lupine shifter Nikan Lawless has it bad for Esperanze Cordona, the sweet and curvy woman who only views him as a friend. But when Nikan is assigned to act as Esperanze’s bodyguard during a weekend education conference, he knows it’s the perfect opportunity to seduce her off her feet—away from the pack. To put his plan into motion Nikan cancels one of their hotel rooms, giving them time to get to know one another in a whole different way. But when a man from Esperanze’s past shows up in need of help, Nikan must shield her from a group of dangerous rogue shifters, all while trying to prove that they’re destined to be mates.
Primal Possession book cover
#2

Primal Possession

2012

To protect her, he will unleash the beast within... As his pack's second-in-command, lupine shifter Liam Armstrong gives orders and takes what he wants—until he meets red-headed, blue-eyed December McIntyre. Liam knows the human beauty is his intended mate the moment he sees her, but December is far too strong-willed to accept his protection. December, whose brother is the town sheriff, has every reason to mistrust shifters after one killed her youngest sibling. But the forceful and handsome Liam has gotten under her skin in a way she hadn't thought possible, and the desire she feels for him is almost too much to bear. When a radical hate group targets all humans known to sympathize with paranormal beings, December is attacked in her bookstore. Reluctantly, she turns to the only one who can help Liam. And he is going to take her to places within herself she never knew existed. Books in the MoonShifter Alpha Instinct, #1 Lover's Instinct, #1.5 (novella) Primal Possession, #2 Mating Instinct, #3 His Untamed Desire, #3.5 (novella) Avenger's Heat, #4 Hunter Reborn, #5 Protective Instinct, #5.5 (novella) Dark Protector, #6 A Mate for Christmas, #6.5 (novella, final story in series)
Mating Instinct book cover
#3

Mating Instinct

2013

As the beast within struggles to break free, he must learn to be what she needs... Surviving for centuries, powerful lupine shifter Jayce Kazan managed to stay away from humans until he met Kat Saburova and was consumed by the need to protect her. But while Jayce shared his passion with the human seer, he refused to make her his bondmate—a refusal that caused the end of their relationship. A year later, an attack that left Kat near death has resulted in another lupine shifter turning her. Furious that he wasn’t the one to save her, Jayce is determined to show Kat that he is the one she should rely on. But the newly turned shifter is still traumatized and worried that she’ll hurt those she loves, unless she can learn to control her inner wolf. And as Jayce struggles to protect Kat from her own worst instincts and convince her to rekindle their love, the extremists who almost killed her are looking to finish the job…
His Untamed Desire book cover
#3.5

His Untamed Desire

2014

She’s ready to make her move… Lupine shifter Daphne’s recent move back home gives her a chance with the fierce and sexy male she’s always wanted: jaguar shifter Hector. She plans to show him she’s all grown up, and more than enough woman for him. But a vampire from her past has been harassing her and will stop at nothing to make her his. He’s not letting her go this time… Hector knows Daphne can take care of herself, but he immediately steps in to protect her from a stalker. He’s lusted after the sweet and sensual she-wolf for years and won’t let anything come between them now. With circumstances forcing them to share a roof, Hector won’t hide his attraction toward her any longer. But Daphne underestimates her stalker’s persistence and it might be too late for Hector to keep the woman he loves safe.
Avenger's Heat book cover
#4

Avenger's Heat

2014

To truly have her, he must free her from her dark secret… Enforcer Erin Flynn has dedicated her life to protecting her kind. But keeping her heart safe from Noah Campbell, the smoking-hot shifter who saved her life last year, is more difficult. The deadly beauty would love to sink into his arms and become his mate, but she knows she can’t—he must never know about her dark past. When Erin is sent to investigate the disappearances of pregnant shifters in New Orleans, Erin and Noah find themselves involved in a mystery more sinister than anyone expected. And as Erin delves further into the crimes, chilling information about her own past is revealed. The people who wanted her dead in the first place are trying to finish the job, and Noah wants nothing more than to shield her from harm. But can Erin truly trust Noah and let him see the wounded beast she’s hidden for so long?
Hunter Reborn book cover
#5

Hunter Reborn

2015

Losing her was the hardest thing he’d ever endured... Warrior shifter Aiden’s investigation of the trafficking of vampire blood leads to a startling discovery: the beautiful vampire bondmate he thought was dead. Decades ago, they’d defied their powerful families to be together, but then Larissa disappeared without a trace. When their mating link broke, it nearly destroyed Aiden. Now she’s back with no memory of where she’s been. Even more shattering—Larissa claims she has no idea who Aiden is. Now she’s back... It’s a race against time to bring down an operation more evil than his pack ever suspected, and Aiden finds himself working side by side with a mate who no longer trusts him—and she wants out. But he lost her once, and he won’t let her go again. Unfortunately, Larissa’s blood is the key to a powerful monster’s dangerous plan—and he’ll stop at nothing to destroy her, sparking off a war between the supernaturals and humans that no one will win.
Protective Instinct book cover
#5.5

Protective Instinct

2015

A woman worth fighting for… Wolf shifter Teresa is blown away by her packmate Ryan’s honesty about his past and his rare empathic powers. She wants him in her bed—and her life. The only problem: Ryan insists they wait, because the last thing he wants is to recreate the hellish family he grew up in. Frustrated, Teresa jumps at the chance to assist a packmate off the ranch—far away from Ryan. On the way, their vehicle is run off the road—and it wasn’t an accident. Ryan rushes to Teresa’s side, determined to protect her. But there’s a dangerous enemy lurking in the shadows, and if Ryan doesn’t break out of his old thinking and put his faith in his and Teresa’s love—and their ability to overcome obstacles together—it will be too late. Length: 27,000 words Author note: This novella is part of the Moon Shifter Series, but can be read as a stand-alone. Moon Shifter series: 1. Alpha Instinct 1.5 Lover’s Instinct 2. Primal Possession 3. Mating Instinct 3.5 His Untamed Desire 4. Avenger’s Heat 5. Hunter Reborn 5.5 Protective Instinct
Dark Protector book cover
#6

Dark Protector

2016

He walked away once; he won't do it again. Wolf shifter Aldric Kazan is no stranger to pain. Since the loss of his mate a century ago, he won't allow himself to fall for someone again—not even the feisty female who stirs things in him that he thought were gone long ago. But as a supernatural investigator, he's forced to team up with the same woman he vowed to stay away from. She let him in once; she refuses to do it again. Natalia Cordona refuses to back down from any challenge—even if it means joining forces with Aldric, the sexy and brooding man who won't get too close. Locating missing vampires before a volatile war breaks out seems nearly impossible as the duo struggle with their explosive and undeniable attraction. Now it's up to Natalia and Aldric to trust each other to stop an all-out war from breaking out that would destroy the harmony they've all worked so hard for. Length: 60,000 words Author note: Though part of the Moon Shifter series, this book can be read as a stand-alone.
A Mate for Christmas book cover
#6.5

A Mate for Christmas

2016

It will take a miracle to survive the holidays... After recently losing her parents, packmates and a sister, Noel Cordona isn’t even close to being in the holiday spirit. It seems that everyone around her is moving on and happy, but she can’t seem to get it together. When an unexpected kiss changes everything she thought she knew about her packmate Nathan O’Neill, she feels alive for the first time in a year. She’s too broken for him though. At least that’s what she tries to tell them both. But Nathan’s been waiting patiently for Noel. He’s not going to lose faith now. With a little holiday magic, he can help her overcome the weight of her grief and show her that opening her heart to him is the best Christmas gift he could ever give her. Moon Shifter Series Length: 32,000 words Author note: A Mate for Christmas is not meant to be read as a stand-alone. Set in the Moon Shifter world, this novella features all your favorite characters in a final wrap-up of the Moon Shifter series.

Author

Katie Reus
Katie Reus
Author · 121 books
Katie Reus® is the USA Today bestselling author of the Endgame trilogy, the MacArthur Family series and the Deadly Ops series. She fell in love with romance at a young age thanks to books she pilfered from her mom's stash. Years later she loves reading romance almost as much as she loves writing it. However, she didn't always know she wanted to be a writer. After changing majors many times, she finally graduated with a degree in psychology. Not long after that she discovered a new love. Writing. She now spends her days writing paranormal romance and sexy romantic suspense.
548 Market St PMB 65688, San Francisco California 94104-5401 USA
© 2025 Paratext Inc. All rights reserved