Forgotten Realms: The Empyrean Odyssey Series by Thomas M. Reid

Ever wonder what could bring a demon to the gates of heaven? Aliisza and Kaanyr Vhok have returned from their attempted invasion of Menzoberranzan and turned their sights on Sundabar... moreEver wonder what could bring a demon to the gates of heaven? Aliisza and Kaanyr Vhok have returned from their attempted invasion of Menzoberranzan and turned their sights on Sundabar. But before she can complete a mission in that beseiged city, Aliisza finds herself in the one place a demon would never want to go, no matter how sure she is of her wits and cunning: the very heart of Celestia! Join everyone's favorite succubus and her half-fiend boyfriend, introduced in the War of the Spider Queen series, in the first installment of their own exciting new trilogy! less

What brings a demon to the gates of heaven?The half-fiend Kaanyr Vhok finally arrives at the destination he has sacrificed so much to achieve—he is in the heart of Celestia with his lover and consort, the succubus Aliisza. Only to find that the House of the Triad is falling apart, and he is bound by a vengeful Aliisza and a renegade angel into trying to save it—not exactly the goal he had in mind... moreWhat brings a demon to the gates of heaven?The half-fiend Kaanyr Vhok finally arrives at the destination he has sacrificed so much to achieve—he is in the heart of Celestia with his lover and consort, the succubus Aliisza. Only to find that the House of the Triad is falling apart, and he is bound by a vengeful Aliisza and a renegade angel into trying to save it—not exactly the goal he had in mind.The second full-length novel in The Empyrean Odyssey, The Fractured Sky continues to follow War of the Spider Queen favorites Aliisza and Kaanyr Vhok as the pair of fiends struggle to escape the heart of a deeply troubled Celestia while bound to a particularly determined angel. less

What could bring heaven to the depths of hell?Aliisza betrayed her lover, her mentor, and her son in order to try to stop the dark plot to kill the goddess Mystra. She failed. Now the goddess is dead, magic is malfunctioning, and Aliisza and her companions are trapped. Her only hope of escape lies is in convincing the angels and demons she just betrayed to trust her and work together — before they kill each other.