Adrenaline pumping hotly through his veins, Ares took a sharp corner so fast he had to skid into a change of direction, and then he burst through the doorway to Reseph’s main living area.

His brother, hand wrapped around a bloodied ax, stood in the middle of the room, which was painted in a fresh, dripping coat of blood. Reseph was panting, his shoulders slumped, head bent, white-blond hair concealing his face. He was motionless, his muscles locked up hard. Behind him, a hellhound lay dead, and in the corner, a very much alive hound let out a gravelly snarl, its gaping maw lined with razor-sharp teeth.

“Reseph.”

Ares’s brother didn’t move a muscle.

Fuck. He’d been bitten.

The beast swung its shaggy head toward Ares. Red eyes glowed with bloodlust as it gathered its hind legs under it. Ares calculated the distance to the target in a millisecond, and in one quick motion launched a dagger that impaled the hellhound in the eye. Ares pressed his advantage, heaving his sword in a horizontal side swing that caught the creature in the mouth, slicing its jaw clean off. The hound howled in agony and fury, but Reseph had already injured it and, weakened, it stumbled and fell, allowing Ares an opportunity to run his blade straight through its black heart.

“Reseph!” Leaving the sword impaled in the animal, Ares ran to his brother, whose blue eyes were wild, glazed with pain. “How did they get in?”

“Someone,” Reseph groaned, “had to have… sent them.”

That much was becoming clear. But very few beings could handle or control a hellhound. So if someone had sent the beasts, he was serious about putting Ares and his brothers—and maybe Limos too—out of commission.

“You should feel special,” Ares said, with a lightness he didn’t feel. “You got two hellhounds, and I only got one. Who’d you piss off?” Gently, Ares wrapped his arms around Reseph’s chest and lowered him to the ground.

Reseph sucked in a gurgling breath. “Last night… my… Seal.”

Ares went cold to the core, and with trembling hands, he tore away Reseph’s T-shirt to expose the chain around his neck. The Seal hanging from it was whole, but when he palmed the gold coin, a vibration, dense with malevolence, shot up his arm.

“The warg plague…” Reseph spoke between gritted teeth and rattling breaths. “Worse. This is… not… good.”

Not good was an understatement. As Ares held the medallion, a hairline fracture split it down the middle. All around them, the cave began to shake. Reseph screamed as his Seal cracked into two pieces.

The countdown to Armageddon had begun.

“The first Horseman of the Apocalypse has been loosed.”

Sergeant First Class Arik Wagner, one of two representatives for the U.S. Army’s paranormal unit, the R-XR, missed a step as he paced the length of the conference room inside The Aegis’s Berlin headquarters. The two agencies had worked independently for decades, but had recently joined forces to combat the ever-increasing underworld threat. Arik never took intel from The Aegis lightly, but he still had to run Kynan’s words through his brain a couple of times before he could make sense of the situation, let alone believe it.

As he inhaled a shaky breath, he concentrated on pacing without falling on his face as he slid glances at Kynan and the other eleven Elders who were sitting around the conference table. It was obvious that some were already in on the news, but the others… not so much, if the shock and fear in their expressions was any indication. The shock was expected; it was their fear that put Arik on edge. The Aegis was an ancient demon-fighting organization that had weathered end-of-the-world scenarios time and time again, so to see its leaders frightened… disturbing as hell.

“Damn.” Regan, a stunning, bronze-skinned woman who was way too young to be in any way called an “Elder,” flipped her long ponytail over her shoulder and played with the dark ends, a habit Arik knew she ran to when she was nervous.

Arik’s normally unflappable partner, Decker, had lost all the color in his face and was now relying on the doorframe to keep his big body upright. “When? How?”

“I just found out this morning.” Kynan’s denim-blue eyes flashed as he shoved the Daemonica, the demon bible, to the center of the table and opened it to expose a page near the back. “It’s all about this passage. She of mixed blood who should not exist, carries with her the power to spread plague and pestilence. When battle breaks, conquest is seal’d.” Tension put lines in his face as he looked around the table. “She of mixed blood is my sister-in-law, Sin. She started the plague that spread through the werewolf population and led to the conflict that broke out within the species a couple of days ago. As the prophecy indicates, when battle breaks, conquest is sealed. The warg battle is what broke the Horseman’s Seal.”

Arik kept up the carpet-wearing routine, his combat boots thudding like muffled gunshots. “So you’re saying that this is a demon prophecy?”

There was a long pause before Kynan delivered an ominous “Yes,” in his gravelly voice. He’d had his throat nearly ripped out by a demon back in his Army days, and he wore the scars and trashed voice like a badge of honor.

“How is the demon prophecy different from human prophecy?” Decker had regained some color, which was good, because with his gray-blue eyes and blond hair, he’d resembled a reanimated corpse.

Kynan, in worn jeans and gray fitted tee, kicked back in his chair and folded his hands over his abs. “Apparently, if the Daemonica’s prophecy goes down, the Horsemen will embrace their demon halves and turn pure evil. If the prophecy from the Bible comes to pass, the Horsemen will take after their angel father and fight on the side of good.”

That stopped Arik in his tracks. “What? The Horsemen are evil. Have you read the Book of Revelation? They’re supposed to usher in the end of days, with disease, war, famine, and death.”

“That’s the most common interpretation of the Bible’s passages.” One of the senior Elders, Valeriu, who also happened to be distantly related to Arik by marriage, drummed his fingers on the oak tabletop. “But some scholars, including myself, think that the Horsemen’s Seals will be broken by Jesus himself, and the Horsemen will lead the way to the end of days, but that’s not necessarily a bad thing.”

“Of course not,” Arik drawled. “Every Apocalypse is a party. Bring your own beer, pretzels, and semiautomatic weapons.” Regan shot him an annoyed glance. Apparently sarcasm wasn’t appreciated in Aegis headquarters. It wasn’t appreciated in the R-XR either, but mainly because Arik was still in the dog house for going AWOL a few days earlier instead of revealing his werewolf sister’s location. “So what does the first broken Seal mean to us? Can we repair it? Prevent the others from breaking?”

“I don’t know.” Kynan let out a frustrated breath. “We’re going to have to dig deep for theories, prophecies, any scrap of information we can scrounge up.”

Shit, Arik was going to need a stiff drink after this. “Do we know what will cause the next Seal to break?”

“All we have is what the next line in the prophecy says.” Valeriu flipped through the stack of paper in front of him and pulled out a single page. “An angel’s mistake shall bring about War, and her death shall break his sword. But be wary, a hound’s heart may yet defeat.”

Arik ran his hand over his military-issue haircut, and wasn’t it an odd time to note that he needed a trim. “What the hell is that supposed to mean?”

“It’s about the second Horseman, War.” Valeriu shoved his glasses up on his nose. “We don’t understand all of it, but we believe War’s agimortus is an Unfallen.”

An Unfallen… an earthbound fallen angel who hadn’t yet entered Sheoul and become irreversibly evil. Interesting. “Wait.” Arik shook his head. “Agimortus?”

“Yes,” Valeriu said. “A trigger for breaking a Seal. It can be a person, an object, or an event.”

“Pestilence’s Seal was broken by an event,” Kynan explained. “Sin was an agimortus whose actions put into motion an event that triggered the Seal to break. Killing her before the plague she started led to war would have prevented the broken Seal. But we believe War’s agimortus is a person. Killing this being will break his Seal.”

Arik paused in his pacing. “If you knew about the first prophecy, that Sin was an agimortus, why didn’t you kill her?”

Kynan inhaled a shaky breath. Sin was sister to his best friends—demon best friends. “In hindsight, it’s obvious. But at the time, we didn’t know. We were too close to it.”

“You were too close to it.” Regan stood, her tall, curvy body drawing Arik’s appreciative gaze. Not that he was interested—he liked his women a little softer and less I’llkill-you-where-you-stand—but she did remind him that he hadn’t seen any mattress action in a long time. Hard to hook up when you had to lie about everything from your name, to your job, to your entire life history.

Red splotches colored Kynan’s cheeks. “Yeah. I was. I’d read the prophecy a million times, so I should have seen that she was the agimortus as soon as the plague started. The thing we need to remember is that prophecies are obscure for a reason.”

Arik considered everything he’d been told. “The prophecy mentions hounds. Would hellhounds have anything to do with any of this?”

Ky’s dark eyebrows drew together. “Why?”

“The R-XR has received an unusual number of reports of hellhound sightings.”

The Guardians exchanged looks, and Val finally said, “We’ve noted an increase in sightings as well. Our Guardians have encountered more in the last week than in the entire year before.” Before Arik could ask, Val shook his head. “We don’t know why.”

“Okay, so we have to find a way to prevent War’s Seal from breaking. What about the other Horsemen? Can the Seals be broken out of order?”

“According to the Daemonica, Pestilence’s Seal had to break first, but the others can break in any order. And it gets worse,” Val said miserably, and oh, joy, all of this somehow got worse. Arik’s drink was going to be a double. With a chaser. “If any two Seals break, the others will fall as well, without any trigger. Once all four Seals are broken, we’re chin deep in Armageddon.”

Arik felt his thoughts being scattered like confetti in a windstorm. He had so many questions, and he had a feeling there weren’t nearly enough answers. “Are we looking at imminent breakage of the other Seals? Or is this something that could go on for centuries?”

“Technically, it could go on.” Regan’s gaze was somber, her husky voice grim. “But Pestilence being loosed is bad enough. All over the world, disease is springing up, water sources are contaminated with bacteria, and demonic activity is off the charts. Do we really want that going on for centuries?”

Val cleared his throat. “It’s written that the destruction of one Seal weakens the others. In effect, it causes events to occur that will hasten the breakage of the other Seals. An object needed to break a Seal, for example, might be found after thousands of years of hiding. And, no doubt, Pestilence, as pure evil, is actively trying to break his siblings’ Seals. The Horsemen are the most powerful underworld beings in existence, next to Satan himself. They will virtually rule the Earth if the Final Battle goes in favor of evil.”

“That’s just great,” Arik muttered. “So what’s the plan? Sounds like we need to either contain or kill these Horsemen so that if their Seals break, they can’t wreak havoc, or we need to work with them to keep any more Seals from breaking.”

“We don’t know that they can be contained or killed.” Regan shoved her coffee mug under the coffee dispenser. “We don’t know nearly enough about anything.”

“I’ll see what my in-laws know and can find out,” Kynan said. “They have a unique perspective on demonic lore.”

“Excellent idea.” Regan’s voice was more full of saccharine than her coffee. “Get demons to help.”

“We need all the help we can get.” Kynan laced his hands behind his head and gazed at the medieval painting behind Arik, the one depicting a battle between angels and demons. “And we need it from the Horsemen.”

“Is that wise?” Decker asked. “Do we really want to get cozy with these guys? If they’re evil, we don’t want to be on their radar.”

Kynan shook his head. “According to the Aegis histories, they used to work closely with us.”

“Why’d they stop?”

“Modern stupidity. Around the time of the Middle Ages, The Aegis went a little fanatical with religion. Hell, The Aegis is behind the witch persecutions. There was a huge shift in thinking, which led to the belief that everything supernatural is evil, including the Horsemen.” Kynan gave everyone a stern look. “It’s only been in the last couple of years that we’ve started to return to the original path.”

Arik bit back a grin at Kynan’s tacked-on, in-your-face last sentence. Though he’d met with a lot of resistance from the Elders, Kynan was largely responsible for The Aegis’s new line on underworld creatures. Not only was he married to a half-demon, but he also carried angel blood in his veins. Then there was the fact that he’d been charmed by angels and was fated to play a role in the Final Battle, and Ky wasn’t afraid to use his status to get the Elders to see things his way.

“So basically,” Arik said gruffly, “we need to ask for help from guys who might hold a grudge against The Aegis and who have the power to usher in the end of the world.”