Joseph Balderas, 36, was last seen on June 24, 2016, in Nome, Alaska. Four years later, on August 31, 2020, Florence Okpealuk, 33, vanished from the same town. Podcast host Payne Lindsey traveled to the edge of the Arctic circle to find out more for a new season of Up and Vanished: In the Midnight Sun: Exposing the Dark Side of Alaska’s Mysterious Disappearances. Andrea Cavallier reports