My Lord De Burgh 2: Harlequin comics

It was true—her father was dead. After all the difficulties they surmounted, they finally arrive at her castle, only to find it utterly wasted. Her father has been killed over his research on alchemy and the Philosopher's Stone. A menacing shadow approaches Brighid and Stephen as they search for his murderer! When Brighid sees the lengths Stephen will go to protect her, her feelings for him intensify—she can no longer hide them!