Books like The Sorcerers Abyss

Now the master of the Fifth Circle of the abyss, Azerick is challenged by another demon lord for supremacy. Azerick must face this threat as well as his innermost demons, all the while searching for a way to escape his hellish prison. Ellyssa fears she is going insane as she is plagued by nightmares of her capture and enslavement. Deciding that the key to saving herself lies in the total destruction of the object of her fears, she embarks on a crusade to find and kill the slaver, Captain Jake, and eradicate the slave trade. Ellyssa's nightmares and battles spill out onto the streets of North Haven and gain the attention of the Academy. Fearing Azerick's school is turning out rogue wizards, the Academy decides to hunt down and destroy the rogue and place the school within its control.