Synopsis
Mona Gray is a 20-year-old loner who, as a child, turned to math for salvation after her father became ill. As an adult, Mona now teaches the subject and must help her students through their own crises. 
Original title An Invisible Sign
IMDb Rating 5.3 4,443 votes
TMDb Rating 5.2 110 votes
Director
Director
Cast
Mona Gray
Young Mona
Mr. Jones
Ben Smith
Mom
Dad
Lisa Venus
Ms. Gelband
Lisa's Aunt
Panida Saleswoman
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