The Resident Evil at Blackthorn Manor — Catherine Coulter

In Grayson Sherbrooke's second Otherworldly Adventure, he goes to Scotland to Vere Castle, the home of his aunt and uncle, the Earl and Countess of Ashburnam. His aunt Sinjun had written to him that her resident ghost, Pearlin' Jane, warned that evil was coming. But Grayson doesn't make it to Vere Castle. He's stopped by a mysterious carriage, a beautiful white hand extends to him, he touches it and he's gone. When he comes to himself, he has no memory of the missing day. Pearlin' Jane (see The Heiress Bride) warns him that Lady Blackthorn isn't what everyone believes she is, she's something beyond this world. Then he remembers what happened to him that lost day and knows it isn't trouble that lurks, it's evil.