IMDb5.3Play trailerPlay trailerCount on the unexpected.An Invisible Sign·2010·1h 36m·PG-13·Family, Drama, Romance, ComedyMona 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.Mark as watchedTop castView moreJessica AlbaMona GrayBailee MadisonYoung MonaJ.K. SimmonsMr. JonesChris MessinaBen SmithSonia BragaMomJohn SheaDadSophie NyweideLisa VenusMarylouise BurkeMs. Gelband
