Serafina and the Splintered Heart

From the Publisher:

In the highly-anticipated next installment of the Serafina series, Serafina must confront the darkest threat she's ever encountered at Biltmore Estate. She knows she can face anything with her best friend and closest ally, Braeden Vanderbilt, by her side. But when a sinister force tears them apart, Serafina scrambles to uncover the mystery of her most formidable challenge yet...and about herself and the destiny that awaits her.