The Star Gatherers (sequel to The Moon Hunters)

Weeks after Leilani and Jenay Lo leave Ani Island in a desperate attempt to find help, Dr. Deanne Ambagu and members of the United States Coast Guard arrive on site—ready to offload crucial supplies. But when Deanne’s landing party loses radio contact with the ships, the rescue mission turns into a hostage situation. Leilani thought evil on the island had been defeated with Marit Simi’s death, but she was wrong. She and Jenay forge an unsteady alliance with Lieutenant Commander Adair Simpson, an officer with a shadow agenda, in order to
free the hostages. Will they succeed, or will Ani Island claim more victims?