The Phantom Lover of Briar Castle by Adrian Vale

After inheriting the mysterious Briar Castle, Evelyn Hart must spend thirty nights within its haunted walls before claiming her fortune. But a beautiful phantom named Lucien Briar begins appearing in her dreams, mirrors, and darkest moments. As Evelyn uncovers murders, ancient curses, and a terrifying family secret, she must decide whether Lucien is her doomed lover—or the monster behind the haunting. The Phantom Lover of Briar Castle is a gothic horror romance of forbidden love, supernatural mystery, betrayal, and passion beyond death.