New Explorers - 3rd book in "The Island" series
8 parts Complete Annie, Asher, Hayley, Kenzie, Johnny and Lauren go back to The Island for the Labour Day weekend, they realize something strange about the dock and beach on the other side of the island, as well as some new inhabitants of the cabin right by it.
Written in September 2019 (mostly) the ending is from Dec 2019/January 2020