Oh these books. Wow. If you haven't read them yet, do take time to check them out. K.L. Bone is such a talented writer. She will suck you into the lives of the characters and not let you go.
Shadow of the Rose
The Black Rose Guard #4
By: K.L. Bone
Due Out: Summer 2017
I love Sarah. She's different in where she comes from and who her mother and father are. She's not royal and not 100% immortal blood. She's a wonderful character to see from the outside in with what she's lived through and how she feels about things that have happened.
Want to start at book 1 with Mara and Edward? you can pick all three of the previous books. Might as well get caught up while you wait for this one to come out. It'll be out in a few short months.