Williams was born in Boston, Massachusetts. She graduated from the American Academy of Dramatic Arts in New York City in 2005, where she received the Charles Jehlenger Award for excellence in acting.
Williams is best known for her role as Lindsay in The Human Centipede (First Sequence) where she is trapped as the middle member of the human centipede. Her next major role was Piper in the 2010 suspense drama, Empty. In 2014, she had the leading, title role in the horror film Julia, as a rape victim pursuing revenge.
