Teresa was a young woman whom Li H'sen Chang followed home one day in 1889. He confronted her as she entered a house and hypnotised her into accompanying him to the Palace Theatre. He intended to use a catalytic extraction chamber to distill her life for Magnus Greel. Leela found Teresa in the theatre and, as she was unresponsive, took her clothes and dressed in them, putting Teresa in a wardrobe. When she woke, Teresa was confronted by Casey, who attempted hurry her out of the building. She saw a poster with Chang's face on and quickly left of her own accord, fleeing in fear. (TV: The Talons of Weng-Chiang)

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