Treoir Dragon Chronicles of the Belador World #8 by Dianna Love

Daegan and Casidhe are tested at every turn by angry immortals when they appear uninvited in a place with no exits. An expected change of events devastates Daegan’s hope of gaining the second grimoire volume and shatters Casidhe’s trust. Faced with becoming a monster, Adrianna gambles with the ancient Witchlock power capable of cataclysmic results and becomes collateral damage. Possessed by an Imortik, Reese runs to keep Quinn safe and finds a way to save others even though she can’t save herself. Renata’s two imprisoned Belador friends convince her to attempt escaping, which draws the Imortik master’s unwanted attention and an order to commit murder. Macha is shocked to discover firsthand just how crazy, and deadly, Queen Maeve has become.

In spite of every effort by the dragon king, Beladors, and their allies to fight on, they are losing ground as the Imortiks continue to escape from more rifts.