Tower of Dawn (Throne of Glass, #6)

by Sarah J. Maas

“You only talk of Erawan.” His eyes flashed in warning at the name. “But what of Orcus and Mantyx?” “Who?” Yrene began another set of the exercises on his legs and hips and lower back. “The other two kings. They are named in that book.” Chaol stopped wriggling his toes; she flicked them in reminder. The air whooshed from him as he resumed. “They were defeated in the first war. Sent back to their realm or slain, I can’t recall.” Yrene considered as she lowered his leg to the couch, nudging him to flip onto his stomach. “I’m sure you and your companions are adept at this whole saving-the-world thing,” she mused, earning a snort from him, “but I would make sure you know for certain. Which one it is.” She took up a perch on the thin lip of golden sofa cushion that his body did not cover. Chaol twisted his head toward her, the muscles in his back bunching. “Why?” “Because if they were merely banished to their realm, who is to say they aren’t still waiting to be let back into our world?”