I found that Kiki Macarena was overdoing it - as if it was HIS mission to save the US from drugs. It was a bit cringe to be honest, I just wanted to say to him, you have a wife and kids, your wife is pregnant, go home and look after them instead of trying to be a hero.
The final season was ruined by the female voice over - journalist.... I just didn't understand the point in that other than giving a female a main role.... All the females in the series so far had been brilliant but the journalist was just annoying and her Mexican accent when speaking English unbearable.
Season 3 of Mexico was not as good but I dare say the first 2 seasons were at least as good as the first 2 seasons of Colombia (season 3 was not as good)
It is a shame they have decided to cancel the show but I am certain the loss of interest in the final season was partly caused by that annoying voice over.