Martha Thornhill
Name Martha Thornhill
Family Ariel Thornhill (daughter)
Status Alive
Actor Lili Taylor
First Appearance "Undercover Mother"
Last Appearance "Surrendering Noah"

Martha Thornhill is a woman who went undercover as a sex trafficker to find her daughter Ariel, who was kidnapped as a prostitute in a sex trafficking ring.

She assisted the Special Victims Unit in tracking down Ariel and her kidnapper, Johnny Drake. She was later there for Johnny's trial where Ariel testified against him.

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