The Past Is Never - Tiffany Quay Tyson - Bog

"Siblings Bert, Willet, and Pansy know better than to go swimming at the old rock quarry. According to their father, it's the Devil's place, a place that's been cursed and forgotten. But Mississippi Delta summer days are scorching hot and they can't resist cooling off in the dark, bottomless water. Until the day six-year-old Pansy vanishes. Not drowned, not lost ... simply gone. When their father disappears as well, Bert and Willet leave their childhoods behind to try and hold their broken family together."--Amazon.com