Pamela was the cousin of Robert Dodds.
Pamela was locked up in a lunatic asylum and often talked to Thomas Jeffries, who worked there. In 1798 she murdered Thomas, biting into a cut on his neck; she drained him of his blood.
Following this, Pamela went to Banquo Manor where she killed Robert while he practised for his role as Banquo in Macbeth. She stabbed him and then drained him of his blood. (PROSE: The Banquo Legacy)