The Lunar Magic — C.J. Pinard

The search for her brother's murderer has finally brought Ayla face to face with Linden, but has also landed her in an underground lockup in which she isn't sure how she is going to get out of. As she is separated from Kellan, she has to fight her way to freedom in order to not only rescue him, but to get herself and her friends out of the trouble they've found themselves in. It's going to require her to call in every favor she's ever owed. Sanja, with her power over dark and light magic, commits to sticking by Ayla's side, but it may take every bit she has to get her best friend out of the latest dilemma she's found herself in. Now entangled in a battle with her supernatural friends, Ayla knows there is only one outcome she will be happy with: Linden as a pile of ashes, Kellan by her side, and her friends and family safe. But what it will take to make that happen might just force her to give up everything, including the closure she's been seeking.The Lunar Magic is book 4 in The Ayla St. John Chronicles, and is for readers 18+.