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An Invisible Sign (2010)

PG-13  |   |  Comedy, Drama, Family  |  7 October 2010 (USA)
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Ratings: 5.4/10 from 2,833 users   Metascore: 23/100
Reviews: 31 user | 15 critic | 7 from

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.



(screenplay), (screenplay), 1 more credit »
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Title: An Invisible Sign (2010)

An Invisible Sign (2010) on IMDb 5.4/10

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Cast overview, first billed only:
Mr. Jones
Young Mona
Ms. Gelband
Lisa's Aunt
Crystal Bock ...
Panida Saleswoman
Ann DiGanno
Danny O'Mazzi
Elmer Gravlaki (as Jake Siciliano)
Stephanie DeBolt ...
Lisa's Mom


After a stroke of her father, the weird Mona Gray gives up of all the things she likes expecting that her father will be better. When she is 20 year-old, she is expelled from home by her mother to live her own life. Soon her mother lies to her friend Ms. Gelband, who is principal of a school, telling that Mona Gray is graduated and she hires her to teach mathematic to the third grade. Mona Gray feels affection for the orphan Lisa Venus and her odd behavior attracts the attention of the teacher Ben Smith. When there is an incident at school, the life of Mona Gray changes for good. Written by Claudio Carvalho, Rio de Janeiro, Brazil

Plot Summary | Plot Synopsis


count on the unexpected.

Motion Picture Rating (MPAA)

Rated PG-13 for mature thematic material and some disturbing images | See all certifications »

Parents Guide:





Release Date:

7 October 2010 (USA)  »

Also Known As:

An 1nvisible Si6n  »

Filming Locations:


Company Credits

Show detailed on  »

Technical Specs

Sound Mix:


Aspect Ratio:

2.35 : 1
See  »

Did You Know?


America Ferrera was originally cast as Mona Gray, but dropped out and Jessica Alba replaced her. See more »


When Alba was in class and put a child in a corner by the door she wrote two large numbers on the black board and wanted the children to tell her what sign (greater or less than) to put between them. When the child made a sound to get her attention you could see the less than sign already written on the board, but it was missing after the child from the corner gave the correct answer and the teacher wrote it on the board. See more »


Lisa: Can I live with you after my mom die?
Mona Gray: ...My apartment is small.
Lisa: I'm not that big.
See more »

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User Reviews

Worst film I've ever seen!
19 February 2012 | by (United Kingdom) – See all my reviews

This was unbelievably billed on Sky Premiere as a lovable comedy. I found it a load of badly put together claptrap smattered with some laughs, one of which was the hairstyle bestowed on Jessica Alba. I can see how Mona would be unbalanced by her father (and the hairstyle), particularly in the opening scene where he tells the story of a family who each agreed to amputation of one part of their body so that no-one would be killed. Her behaviour throughout the film, including 'tapping out numbers' was verging on psychotic rather than nervous and shy.

Her mother came across as unbalanced too, when she told her to go because she couldn't help her dad, and allowed Mona to sleep in the street outside for three days with her possessions before having a cosy chat on the sofa together with her dad and saying that she had some savings that would get her a place. She couldn't have done that in the first place? She then lied to the headmistress of the local school saying that Mona had a degree, in order to secure a job for her. It seems that the headmistress didn't bother to check Mona's credentials (oo-er could that really happen these days?), then accused her of lying after the axe incident, when in fact it was her mother. The axe incident, where Mona ended up with an axe embedded in her leg, was the point at which my ever-patient husband finally conceded that it was a ridiculous film. Her mathematics teaching was run of the mill rather than inspired by a buff, and in fact I am sure that she was demonstrating maths too basic for the grade.

Then there was Mr Jones, former maths teacher and present neighbour whose car she bombarded every year with eggs, for a reason which wasn't properly explained at first. When a reason was finally given, to the effect that he hadn't cared when her father fell ill, it wasn't really borne out by the flashback. He knew it was Mona who had bombarded his car, and yet he let it go unpunished for years despite his annoyance and ignorance of the reason. Really? Though it might be down to the fact that he, too, was unbalanced enough to be taking refuge behind numbers, in the form of pendants which told Mona how he was feeling every day. Was there anyone normal? Only the audience, I think.

6 of 11 people found this review helpful.  Was this review helpful to you?

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