Amulet: Book Seven Firelight by Kazu Kibuishi
Stonekeepers Emily, Trellis, and Vigo look for Trellis's lost memories, hoping to find some weakness in the Elf King, Trellis's father. They get more than they bargained for at Algos Island, a place for lost memories with a painful past that has dire consequences.
Meanwhile, Emily's brother Navin heads for the Elf capital on a mission for the resistance. Getting there on the sly is a bit tricky. They get passage on an airship only by working in the food service industry, which makes them a little too visible to all the bounty hunters looking for resistance leaders. So maybe he's in worse trouble than Emily? Maybe not.
The story is getting more dramatic, with very interesting backstory for the Elf King and a big reveal of the long-term plan for the bad guys. The cliffhanger ending is epic. The series isn't losing its excitement or narrative power. I'm looking forward to more.