Soul Ereptors

Ella and her family are part of a long chain of a species called soul ereptors. To ensure immortality they must kill people every five years and drain them of their souls. When Ella's mother and father mysteriously get murdered, her and her siblings are on a hunt for their killers. But when the next five years are coming to a close, Ella and her siblings must find new prey. This is Ella's first kill and she has to find the perfect target. But what happens when her target becomes her love interest and his family is hiding a dark secret?