Memories ( book 4)

It's been it years since I saw the town of Gravity Falls, some I saw the creatures of the night and the mysteries of the town ever since Dipper and I moved away, but now that our children our old enough they can experience the mysteries we had before, but something's wrong with the town. It's like a sickness is upon it. And when a young girl is found with cuts of an eye...we find out the truth....is Bill actually dead once and for all, and has been manipulating the people of this town.....including his daughter.