The Ghost of Thornton Hall is the 28th installment of the Nancy Drew PC series. It was released in stores on May 14, 2013. Thornton Hall was once a grand manor home to the Thornton family, but in recent years after a terrible tragedy, it and Blackrock Island itself have been abandoned and left to ruin. Bride-to-be Jessalyn Thornton took a friend and dared to return to the manor for her pre-wedding celebration, but she disappeared. Her friend is convinced that the family ghost, Charlotte, took her. Did something supernatural happen to Jessalyn, or is someone in Thornton Hall keeping something besides family secrets?