CONTENT GUIDANCE: This book series is not for children. It explores adult themes such as abuse, sexual assault, torture, violence, child abuse, incest, kidnapping and abduction, death, racism, cannabis use, and alcohol use. If any of these subjects are triggering for you, you may want to skip this book. Your mental well-being is important! *** After Oli goes through a portal into the Forgotten Forest, her brother is left behind to answer to the Steward of the Limmikin Throne. And as she makes her way through the strange new world and beyond, she discovers new truths about her family-including the existence of a long lost sibling. Once reunited in their own realm, the Locklears make a pact to find out what their parents have been hiding from them. Meanwhile, other players are moving across the board. Evienne and Merys worry what it means that they can't divine any possible futures in their realm. Beth, an Ageless vigilante is in town seeking answers. An Unseelie spy has infiltrated the Pack. Then there's the return of an old friend-or enemy, depending on your point of view. In secret, Veda practices with her powers with varying results, and Harper begins to see things she shouldn't. With new allies and foes on both sides, it's a race to find the Four Treasures of the Tuatha Dé Danann. If Oli and the Pack can get their hands on all of them, they may just have a chance at stopping the walls between realities from breaking down. And as the Outcrossed untangle their own pasts, the Shadow Queen is readying her forces for an invasion, enlisting the help of a very old enemy who has no other choice but to take up her quest. But when the wolf moon rises over Birch Hollow, they'll all find out who is truly in control of the fate of the multiverse.