A dark and starless forest

"Derry and her eight siblings live in an isolated house by the lake, separated from the rest of the world by an eerie and menacing forest--until the night her eldest sister disappears. Jane and Derry swore to each other that they'd never go into the forest--but Derry is sure she saw Jane walk into the trees. Derry will risk anything to protect the family--even if that means returning to the forest that has started calling to Derry in her missing siblings 'voices'"--Provided by publisher.