One minor scene missing...
Good movie but one thing that annoyed me...
At the end, we see the old man, the gardener, the kid, etc all happy because McCall 'fixed' their problems.
But we don't see the effect that McCall's killing of Dave had on his very nice family. As far as they know her husband and their father simply disappeared one day.
This could have been fixed with a scene where we see him secretly paying for the kids' college fund, or something similar, as a way to partially atone for the killing of their father/husband.