Lake City - Book 7 final book of Rebels

Jacob and Fawn decided to go back to the Capital. For what reason? Adaline, Caleb, and Cody survived. Ace still has Kimmi's powers. Rosemarie died. Ace met a person that just walked out of the water. Will this person be a threat? If they are can Kimmi and everyone else handle it? Find out in the 7th book of Rebels.