All Things End — K.S. Marsden

The Final Book in the Northern Witch Series!​Mark has stepped up and taken on some witchy responsibilities from his poorly Nanna.He has to decide who he loves more - his boyfriend Damian, or Robert, the demon that possesses him.And when the most powerful Dark Witch in the country starts to infect their pleasant life in Tealford, Mark has the biggest challenge of his life. Despite being the newest member, he has to lead his coven if they are going to survive.