In 1868, Angela worked as the servant for Professor Byng and his son. When the professor died of a heart attack, Angela attended the funeral ceremony in the nearby cemetery. She was present in the Byng home the following day, when the recently-buried professor stumbled into his own parlor, collapsed from his wounds, and died again.
The Assassins Evie and Jacob Frye investigated the death of the professor, questioning Angela when they visited the Byng home. Due to their investigation, it was uncovered the Professor Silas had used spider venom to induce a comatose state, before stealing the body after the funeral and attempting to eat the victim's brain to gain his knowledge.