Real age of Grey Damon in The Devil Within
In the movie The Devil Within, Grey Damon was:
22 years old
That was the real age of the celebrity according to our calculation.
The calculation of the shown age took into account the first day of the year in which the movie The Devil Within was released:
January 1, 2010
And the day in which Grey Damon was born:September 24, 1987
Since movies usually don't take more than one year to be released since the beginning of the filming process, Grey Damon may have been one year younger or one year older than the shown age while some scenes of the movie were being filmed.