School secretary and history teacher assigned by the Mother Superior to assist the deputy sheriff with the investigation. She helps uncover hidden tunnels and ultimately saves him by dropping a cross to kill the killer.
Cristina leads the inquiry into Gwen's death, uncovering hidden truths.
Cristina investigates Gray's conduct and the school's dark records.
Cristina holds an educational authority role over Suzy.
Cristina holds an educational authority role over Marie.
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