Though the main theme - helping people, prevent youngs from drugs and keeping criminals in prisons - is not so original, see all those series like Walker, Texas Ranger, CSI's, Hunter, The Shield etc., I think it still has it's own spark and a bit of originality.
This spin-off series contains more than psychopatic murders. I think the violence against women, which was one of the most used topic, shows us that crime doesn't mean only killing people for such no reason. It keep us to remember that violence is everywhere in our neighborhood and it's not always so obvious.
I love the characters of Trent and Carlos and it's a pity there won't be any new 'Sons of Thunder' episodes.