Gaslight (Unabridged‪)‬

All Nansi knows is that her mother disappeared on the day she was fished out of Cardiff docks. With no other family to turn to, she works at the Empire Theatre, trying to earn enough money to hire a detective to find her mother. Everything changes when Constance and Violet join the theatre. 

Nansi is forced to be part of Violet's crooked psychic act. But it's when Constance recognises her, and realises who her mother must be, that Nansi's world is turned upside down forever.