Radiant Sin

Book 4: Dark Olympus

by Katee Robert

Genres: Erotic & Steamy Romance; Romantic Fantasy; Fantasy Romance; Dark Romance

Synopsis

As a disgraced member of a fallen house, Cassandra Gataki has seen firsthand what comes from trusting the venomous Thirteen. But when the maddeningly gorgeous and kind Apollo asks her to go undercover as his plus-one at a week-long party hosted by a dangerous new power player...Cassandra reluctantly agrees to have his back. But she has one condition: when it's all over and Apollo has the ammunition he needs to protect Olympus, she and her sister will be allowed to leave—for good. Apollo may be the city's official spymaster, but it's his ability to inspire others that keeps him at the top. Despite what the rest of Olympus says, there's no one he trusts more than Cassandra. Yet even as their fake relationship takes a wicked turn for the scalding hot, a very real danger surfaces...threatening not only Cassandra and Apollo but the very heart of Olympus itself.

Release date: February 7, 2023

Publisher: Sourcebooks Casablanca

Sample

1

Cassandra

I hate parties, Olympus, and politics…but not necessarily in that order.

I can avoid two out of the three on good days, but today is promising to be anything but. It started this morning when I spilled my coffee all over Apollo’s shirt. A rookie mistake, and one that might get me fired if my boss were anyone other than Apollo. He just gave a small smile, assured me it was his fault when it was clearly mine, and changed into the spare suit he kept in his office.

He should have yelled at me.

I’ve worked for the man for five years now, and even that isn’t enough time to stop expecting the other shoe to drop. He’s hardly perfect—he’s one of the Thirteen who rule Olympus, after all, and there are no saints among them—but he’s the best of the bunch. He’s never abused his power over me, never turned his position as my boss into an excuse to be a petty tyrant, has never even raised his voice no matter how thoroughly I’ve fucked up from time to time.

It’s maddening.

I shove my hair back, hating that I can feel sweat slicking down my back as I climb the last flight of stairs. Something is wrong with the elevator in Dodona Tower, and for reasons that seem suspect, it only goes halfway up. I glare down at the file in my hand. I should have just left well enough alone when I realized Apollo forgot it as he rushed out the door for his meeting with Zeus. He’s an adult and is more than capable of dealing with the consequences.

But…he didn’t yell at me.

No one who knows me would call me a bleeding heart—more like a coldhearted bitch—so I have absolutely no reason to have caught a cab to the center of the upper city, taken the elevator halfway up, and then proceeded to climb the rest of the thirty floors on foot.

In six-inch heels, no less.

There’s something wrong with me. There must be. Maybe I have a fever.

I press the back of my hand to my forehead and then feel extra foolish because of course I feel overheated. I just did more exercise than I would ever intentionally participate in unless running for my life. And even then, I’d fight before I ran.

I curse myself for the millionth time as I push through the stairwell door and out into the hallway where Zeus’s office is located. Then I get a look at my reflection in the massive mirror next to the elevator. “Oh no.”

My red hair has gone flat, and there’s a sweat stain darkening the line under my breasts—which means there’s an answering one down my spine. I’m practically dripping. Without thinking, I dab at my forehead and then immediately regret it when my blouse comes away with a smear of foundation. My makeup has to be melting off my face right now. I look like I got caught in a rainstorm, except it’s not rain, it’s sweat, and my face is the color of a tomato on top of everything else.

“Fuck this. He doesn’t need the file that bad.” I turn for the elevator…and then remember that to flee, I have to make the return trip down fifteen flights of stairs. My thighs shake at the thought. Or maybe they’re shaking from the climb.

Does it count as a workplace accident if I fall down the stairs on an errand I technically wasn’t asked to do? Apollo would probably find some way to blame himself and pay for my medical bills, but getting hurt like that means no paycheck, and no paycheck means my little sister might not have the money she needs to buy books or school supplies or all the other random shit being at university requires. I can’t risk an injury, even if it means I’m humiliated in the process.

“Cassandra?”

I curse myself yet again and turn to face the gorgeous white woman walking down the hallway toward me. Ares is her name now, but it used to be Helen Kasios. I wouldn’t call us friends exactly, but I’ve attended the parties she used to throw from time to time before she became one of the Thirteen. It always felt a bit like watching animals in a zoo as I posted up against a wall and witnessed the powerful people from Olympus’s legacy families poke and snap at one another. I’ve learned a lot from playing the sidelines, nearly enough to protect me and my sister from the circling wolves.

But Helen isn’t too bad, honestly. She’s never cruel when kindness will further her goals, and she’s perfected a glittery exterior that everyone seems to think means she’s empty-headed but that I’ve always interpreted as a warning not to get too close. No one surfs the political currents as adeptly as she does if they’re not smarter than most of the people in the room.

But that was before she became Ares. Now I can’t take anything for granted when it comes to her. We aren’t on the same level—two women from legacy families, even if mine is disgraced and hers rules Olympus.

She’s one of them now, and I’m still me.

“Helen. Or, rather, Ares.” I strive to keep my tone even, but her name still comes out too sharply. “What are you doing here?”

“Meeting with my lovely brother.” She shrugs. She’s built slim the way her mother was, though there’s clear muscle definition in the arms left bare by her black sheath dress. She looks cool and professional and untouchable, her light-brown hair perfectly done.

I feel grimy standing next to her. I haven’t wanted a thin body in over a decade—I love my curves out of sheer defiance of everyone who acts like they should be part of a before picture—but it’s hard not to compare us when we stand like this.

I ruthlessly squash the urge to shift, to conceal. There’s no fixing how messy I look, and trying to do it will just telegraph how uncomfortable I am right now. I raise my chin and focus on smoothing out my expression instead. “I see.”

She gives me a long look. “Apollo’s in with him now. I don’t think he knew you were coming, or he would have waited for you.”

There’s no getting out of this. I’m here. I might as well see it through. I hold up the file between us like a shield. “He forgot this.”

“Ah.” She glances back down the hallway. “Well, I’ll walk you down there.”

“That’s really not necessary.”

“It really is.” She spins on a heel and faces the same direction as me. “With things in a bit of upheaval right now, the security is ramped up. Honestly, I’m not sure how you got up here at all. My people are supposed to have the upper floors locked down.”

That explains the elevator “malfunction” and why the guy downstairs was such an asshole. I shrug a single shoulder. “I’m persuasive.”

“More like you’re terrifying.” She laughs, a sound so happy it makes my chest ping in envy. I don’t want what Ares has—the title, the power, the responsibility—but it must be nice to be so comfortable in how she moves through the world, sure that it will bend to her impressive will.

I’m not naive enough to think that everything comes as easily to her as it appears, but I’ve had to fight and claw my way through the last decade of life. People look at me and don’t automatically assume innocence. I’m painted with the same shame my parents were, even if I don’t deserve it.

Not that it matters. I don’t give a fuck what these peacocks think of me.

Not even Ares.

“Your people are specially trained,” I snap. “If they can’t take me, that sounds like a you problem.”

“Absolutely.” She agrees so damn easily. “By the way, is Orpheus still bothering you?”

Mention of Apollo’s brother makes me frown. What does Orpheus have to do with anything? It takes several steps for understanding to settle over me. She’s talking about that party where he was being an arrogant little prick, but that was months ago. I’m honestly surprised she remembered at all. “I can handle Orpheus.” He might be bigger than me, but he’s brittle. I could break him without lifting a finger.

“If you’re sure… I know it’s a touchy subject because he’s Apollo’s little brother.”

I snort. I can’t help it. “Apollo has more or less washed his hands of Orpheus.” As much as Apollo can wash his hands of anyone in his family. What it really translates to is that he’s stopped smoothing over Orpheus’s messes and cut off his money. With how their mother babies the spoiled brat, it never would have worked if Apollo wasn’t, well, Apollo. “When he shapes up, he can play prodigal son and get all the attention he’s deprived of right now. He has bigger things to worry about than chasing some woman who doesn’t want him.”

“If that ever changes, don’t hesitate to call me.”

“Sure,” I lie. I know better than to trust anyone in this godsforsaken city. When push comes to shove, Ares will look out for herself and her interests before helping someone else. Expecting anything else is like expecting a fish to sprout wings and fly. “I’ll do that.”

“No, you won’t.” Ares smiles. “But the offer still stands. Here we are.” She stops in front of a large dark door with Zeus’s golden nameplate on it. The

current Zeus is Ares’s brother. The last one was her father. I’d rather chew off my own arm than deal with either of the men who’ve held the title during my lifetime, but I’m here. It’s too late to go back now.

I do my best not to hold my breath—not with Ares watching—and knock.

Apollo’s the one who opens the door, and I instinctively brace myself for a whole new reason.

I hate looking at Apollo. He’s too fucking perfect, a product of his Swedish father and his Korean model of a mother. Tall, broad shoulders, perfectly trimmed black hair, and kind dark eyes. It’s the latter that always hit me like a blow to the chest.

I should have quit a long time ago.

As his executive assistant, I’ve got my fingers in an information network that spans all of Olympus and beyond. I’m the one who compiles the reports from the various sources, complete with my thoughts, before Apollo gets them. The work is challenging, and I actually enjoy it.

Not that I’ll ever admit as much out loud.

But as much as I like what I do, this attraction is getting to be too much. Better to work in an office job I loathe than to have…feelings…about my boss. Even if the feelings in question are something as simple as lust. It complicates things.

I know what happens to people who get tangled up with the Thirteen.

They die.

I shove the file at him. “You forgot this.” My voice is too sharp, too bitchy. He didn’t ask me to do this, but I’m embarrassed and it’s so much easier to snarl and snap than admit it. “I’m not your errand girl, and now I’m in overtime for the week.”

Apollo raises a single dark brow. “You didn’t have to come all this way, Cassandra. I would have done without.”

Without a doubt. He’s capable on a truly terrifying level and has nearly perfect recall of anything he’s ever read. He would have been fine relaying the contents of the file without having it on hand. He probably only put it together for Zeus’s benefit.

But he was nice to me this morning.

I am a fool.

“You’re welcome.” I turn on my heel. “See you tomorrow.”

“Cassandra.”

I ignore him and keep going. If security is the reason the elevators won’t go above floor fifteen, then I bet they’ll descend from here. They’re keeping people out, not in. My exit won’t be marred by having to take a breather on the stairwell and praying to the gods that no one stumbles on me. My pride won’t be able to handle it.

“Cassandra.” He’s closer. Damn it, I should have known he wouldn’t let this go.

I sigh and stop. It’s beneath both our dignities to have him chase me down the hall in front of Ares.

Apollo stops next to me, his longer legs having covered the distance easily. He pauses. “Thank you for bringing this. If you’ll hold on for a few minutes, I’m just wrapping up. I’ll give you a ride home.”

The temptation to say yes nearly makes my knees buckle. I’ve shared enough rides with him on the way from one meeting to another over the years. I know exactly how it will go. He’ll slump back against the seat and loosen his perfect black tie. Not a lot. Just enough to drive me to distraction. Then he’ll pull out his phone and leave me to my thoughts.

Apollo never prattles on the way some people do. He’s not one of those strong, silent types, but he doesn’t feel the need to fill quiet moments with inane chatter. The car ride will be comfortable and lovely, and I absolutely cannot say yes to it. It’s one thing to have those moments during the workday when I can tell myself there’s no avoiding them. After hours?

No. Absolutely not.

“I’m fine.”

He searches my face as if he can tell I’m being stubborn for the sake of being stubborn, but Apollo is a man who respects boundaries so he just nods. “Keep the cab-fare receipt and expense it.”

I hate how weak I get at the simple thoughtfulness he continually demonstrates. Apollo is too savvy not to know how tight money is for me—his entire job is information, after all—and he also understands me well enough to guess I won’t take charity. Not from him. Not from anyone. Not when it’s never really charity and always comes with strings attached.

But a business expense?

My pride can handle that.

“Fine.”

“See you tomorrow, Cassandra.” The warmth in his tone almost brings me up short before I forcibly remind myself that this is just how he speaks to people. He can get tense from time to time, but Apollo really took that old saying about flies and honey to heart. Especially when it comes to me, as if he can smooth my sharp edges with pure charm.

It’s nothing personal. It’s certainly not interest.

My unfortunate attraction is one-sided and that’s just fine with me.

It’s only a matter of time before I get out of this cursed city once and for all. The last thing I need is to get entangled with one of the Thirteen—another one of the Thirteen—before I do.

2

Apollo

I have to fight not to stare at Cassandra’s big, perfect ass as she stalks down the hall away from me. It doesn’t help that she favors pencil skirts and heels, which only serve to showcase her generous curves further. I can’t ask her to change her style simply because I want her. It’s my problem, not hers. If I’ve taken more than my fair share of cold showers since hiring her five years ago? Well, that’s a small enough price to pay for lusting after my employee.

That’s the crux of the problem.

I hired her.

She works for me.

Letting her know I’m interested would be highly inappropriate. Even without the employer-employee power dynamic, I am one of the Thirteen and that skews things too far in my favor. If I asked her out and she felt she couldn’t say no…

I shake my head and turn back down the hall. Which is right around the moment I realize I’ve been staring after Cassandra in front of the new Ares. She gives me a wide-eyed innocent look that I don’t believe for a moment.

“She’s got quite the mouth on her, doesn’t she?”

Even though I know she’s baiting me, I can’t help defending Cassandra. “Wouldn’t you after everything she’s gone through? People in this city treat her like getting too close will poison them, too.” The worst part is that they’re not entirely wrong, if not for the reasons everyone believes.

Twelve years ago, Cassandra’s family was one of the most powerful in the city…until, almost overnight, they weren’t. As far as the greater population is concerned, her parents did something to anger the last Zeus and were set to be exiled. They died in a car crash before he could enact that punishment.

The truth is far more sinister. Her parents attempted to exploit an ancient, barbaric clause in Olympus’s laws and were removed as a result.

The clause states that if someone manages to assassinate a member of the Thirteen—exempting the legacy titles of Zeus, Hades, and Poseidon—then that person will take the title. Our history is filled with black holes where information should be, but best I can tell, this immutable clause was added to protect the city if one of the Thirteen turned corrupt beyond all reason.

For obvious reasons, its existence is kept a closely guarded secret. It effectively paints a target on ten out of the Thirteen and would breed utter chaos if widely known. Yet if Cassandra’s parents had succeeded, her role in Olympus would be very different. She’d be the daughter of one of the Thirteen rather than the daughter of a disgraced house.

Her parents would still be alive.

Ares shrugs. “Olympus is what it is.”

A vague and unsatisfying statement. Our city might be home, but very few people would go so far as to claim it’s fair and just. Not with power skewed so heavily in one direction. Maybe that will change with our new leadership…

I turn my attention back to Zeus’s door as Ares nods goodbye and leaves me to my work. Zeus truly entered a trial by fire when coming unexpectedly into his title. Between how things hashed out with his sister claiming the title of Ares and the exile of the old Aphrodite, the transfer of power has been anything but easy. I glance down at the file in my hands. The information it contains is worrisome if not downright damning.

Olympus is in trouble.

But even with all the resources at my disposal, I can’t say for certain how much trouble.

Up until this point, Olympus has mostly existed in its own little snow globe. The greater world wrote us off long ago as an unreachable prize. We all took for granted that it would always be that way, that the barrier keeping Olympus from the rest of the world would hold forever.

Now, it’s failing. And no one can figure out why.

A problem for another day. We have enough to worry about right this second.

I step back into Zeus’s office and close the door behind me. “Sorry about the interruption.”

He sits behind the big desk in the middle of the room, a white man with blond hair and a perfectly tailored suit. He’s the spitting image of his late father, though he wouldn’t thank me for pointing it out. That’s where the comparison ends, though. This Zeus doesn’t have the same mercurial charisma that the last one could turn on at the drop of a hat, and that fact has made his taking of the title challenging.

Honestly, I prefer it. He might be difficult to work with at times, but I don’t have to worry about any nasty surprises. It’s a relief after dealing with his father.

He nods, and I resume my seat across the desk from him. Only then does he speak. “You were saying…”

I set the file aside. I don’t need it, though I appreciate Cassandra taking the time to bring it all the way here. The woman is as foul-tempered as a wet cat, but she’s remarkably kind when she forgets to snarl at everyone around her. “Despite exhausting my information network, I still don’t know where Minos came from. He and his people are ghosts. For all intents and purposes, they appeared out of nowhere a few weeks ago to participate in the Ares tournament. We can’t even pinpoint how they knew to come in the first place.”

Zeus steeples his hands before his face. “They paid dearly to enter the city. That kind of money doesn’t just appear when someone wishes upon a star.”

“I’m aware, but maybe Poseidon should have asked more questions before he arranged transport.”

“That’s his prerogative.” Zeus leans back. “If I start asking too many questions, he’ll start growling about overreaching.”

He’s not wrong. Poseidon doesn’t participate in most of the political squabbling, but he’s no pushover. “This is important. Surely he realizes that.”

“Possibly.” Zeus shrugs. “But that’s less important to him than protecting his territory and his power base. We know he brought in Minos and his people. That’s enough. He was entitled to do so, thanks to the tournament. It’s open to everyone.”

I hardly agree that it’s enough, but I let him move us along all the same. Ultimately, all that matters is that Minos and his people are still here despite the tournament being over. “It’s no accident that Minos pushed his way into the city and is now brokering secret information about Olympus’s enemies in order to stay.”

“I know.” Zeus sighs. “He was planning this from the beginning. If one of his people became Ares, we’d have less maneuvering power than we do now, but we’re still not in a good position to ignore whatever information he claims to have.”

If there is an enemy capable of taking the city, we need to know about it before we lose our main defensive measure—and so far, Minos has given us very little of what he supposedly knows. “I’ve spent the last few weeks searching, and there’s nothing. Either Minos is bluffing or this group rallying against Olympus is good enough that they’re essentially invisible.”

“Fuck.” Zeus presses his fingers to his temples. “We can’t risk it if he’s not bluffing. The information he’s already let drop is enough to make me think there really is a threat.”

“I agree.” I, of all people, am aware that knowledge is power. There’s no telling how much this shadowy enemy might know about us. Olympus might no

t broadcast all its secrets, but there are always exiles and I imagine most of them would be willing to talk for a price. Or out of sheer spite. “We have to assume worst-case scenario, that they know plenty about us.”

“And we know nothing about them. Not without Minos.”

Minos is well aware of the position he’s put us in, and he’s leveraging it for all he’s worth. That’s why we’re having this meeting today. He’s offering to tell us all he knows about this supposed enemy. In exchange, he wants money, a home, and Olympic citizenship for all the members of his family.

The first two are easy enough. The latter is complicated because Zeus granting citizenship is as good as elevating the family to the highest levels of Olympic society. It will change the balance within the upper crust of the city, and we might have a revolt on our hands as a result.

If there’s anything Olympus hates, it’s change, and we’ve had more than our fair share of it in the last year.

“We have to give him what he wants.” Zeus curses. “This had better be worth it, because we can’t take it back without an even bigger mess.”

That’s what I’m afraid of. No matter what steps we take today, the consequences are far-reaching. “If you give me more time—”

“I can’t do that.” Zeus pushes slowly to his feet. “Every day counts right now, and we’ve already spent too long trying to find a different solution. Another week or two won’t make a difference.”

Impossible not to feel the sting of his blunt statement. It’s my job as Apollo to be plugged into information streams that aren’t accessible to anyone else. I’m essentially Olympus’s spymaster, and even with my team and all the resources at my disposal, I’ve failed. Between this and my inability to figure out why the boundary is failing, I can’t help bristling. “There has to be another way.”

“We’ve looked. There’s not.”

“You can’t deny this feels like a trap. He has the whole world. Why settle here?”

Zeus sighs, suddenly looking a decade older—and even more like his father. ...