Susan (The Doomwood Curse)

 was the maid of Lady Sybil and helped Charlotte Pollard into the house when she felt cold. She told Charley about the Highwayman she met, Dick Turpin who stole her necklace. She was stabbed in the Charley's wedding dress, by Lady Sybil. When the Grel were defeated, she returned to life, where it was discovered that she was John long lost sister.(AUDIO: The Doomwood Curse)