The Amagarians Series by Stacy Reid

The darkest taste of temptation… Fleeing from a blood oath made against her will to the tyrant king, the last place Princess Saieke expected to be trapped was in the Darkage—the land of the feared shadowed demons. Even worse, she's stuck with Archduke Drac EL Kyn—a creature of darkness and sensuality, who entices her with reckless passion. The only thing she needs from the fierce warrior is his body to further her plot, certainly not the soul-searing desire he rouses... moreThe darkest taste of temptation… Fleeing from a blood oath made against her will to the tyrant king, the last place Princess Saieke expected to be trapped was in the Darkage—the land of the feared shadowed demons. Even worse, she's stuck with Archduke Drac EL Kyn—a creature of darkness and sensuality, who entices her with reckless passion. The only thing she needs from the fierce warrior is his body to further her plot, certainly not the soul-searing desire he rouses. Shadow assassin Drac must unearth the factions who murdered the dark king. Drawn by an irresistible hunger to the princess, he struggles to maintain distance from a woman who is forbidden to those of his race. As she navigates the traps laid for her by enemies, Drac must decide if he will claim Saieke as his mate or relinquish her to avoid embroiling his kingdom in war... less

Tehdra El kyn, a warrior elite of the shadow realm, has infiltrated the Nurian kingdom as a concubine for the merciless King Ajali, a man her demon has claimed as mate. Tehdra enters a court of deceit, political intrigue, and danger, where she tries to prevent the kings’ assassination without betraying her heart and her realm. Soon she finds that she must make terrifying choices which may result in her death or war for her kingdom... moreTehdra El kyn, a warrior elite of the shadow realm, has infiltrated the Nurian kingdom as a concubine for the merciless King Ajali, a man her demon has claimed as mate. Tehdra enters a court of deceit, political intrigue, and danger, where she tries to prevent the kings’ assassination without betraying her heart and her realm. Soon she finds that she must make terrifying choices which may result in her death or war for her kingdom. King Ajali Haddin is powerful, cunning, and ruthless in protecting those he loves. With whispers of the realms plotting his death and the destruction of his kingdom, he uses Tehdra, a suspected spy to draw the enemy into combat. The last thing Ajali expected was to be captivated by Tehdra’s fierceness and her chilling beauty. Resisting her is the hardest battle he's ever fought, but one he is determine to win. For to claim a woman as Tehdra means betraying his kingdom. less

In a word teetering on the edge of war…Lachlan Ravenswood lives in cold, emotionless exile lest he tempts the monster within him to rise. For centuries he’s denied its darkest urgings, his duty to the realm as a shadow assassin the only call to which he responds. Until her. Shilah Symonrah, an Imperial telepath on a mission to liberate her kingdom from a tyrant, arouses every protective and lustful instinct within Lachlan... moreIn a word teetering on the edge of war…Lachlan Ravenswood lives in cold, emotionless exile lest he tempts the monster within him to rise. For centuries he’s denied its darkest urgings, his duty to the realm as a shadow assassin the only call to which he responds. Until her. Shilah Symonrah, an Imperial telepath on a mission to liberate her kingdom from a tyrant, arouses every protective and lustful instinct within Lachlan. In a desperate bid to escape the Empire of Mevia, she shatters his barrier releasing the monster inside, drawing them together in a mental and physical war for each other’s soul and body.Heavy is the crown of darkness…A terrifying prophecy foretells of Shilah becoming the queen of darkness, a vision she did not understand until he claims her—a monster, one whose touch sets her blood on fire. She must resist succumbing to the soul-searing passion burning between them, lest she unleashes darkness that neither can be saved from. less

She had no idea what one night of forbidden pleasure would unleash... The violent and all-consuming power of the Phoenyx is awakening inside Princess Xian, and she's a powerful temptation for kingdoms greedy to harness her might for themselves. Now that wars been declared Xian must cement more power for her kingdom, by marrying a man her king decreed... moreShe had no idea what one night of forbidden pleasure would unleash... The violent and all-consuming power of the Phoenyx is awakening inside Princess Xian, and she's a powerful temptation for kingdoms greedy to harness her might for themselves. Now that wars been declared Xian must cement more power for her kingdom, by marrying a man her king decreed. The enigmatic Gavyn Westk'arr rouses an inexplicable hunger in Xian's heart, and she's determined to take a night of passion with him before surrendering to her duty. Little did she know that one taste of her chakra would unleash a beast within him and an unexpected passion that will force them to make sacrifices that will shatter their hearts. less