House of Salt and Sorrows

On a remote island estate, Annaleigh Thaumas, the sixth-born of twelve sisters, has watched four of her siblings die under increasingly tragic circumstances. Plagued by ghostly visions and a growing suspicion that these deaths were no accident, she begins to investigate the dark history of her family. Annaleigh soon discovers her sisters have been secretly sneaking out each night to attend mysterious midnight balls, and she must decide whether to join their forbidden gatherings to uncover the truth or try to stop them before the family curse claims more lives.