In your post? Can't see much. I know nothing about the programme but I'm assuming it's about drug enforcement and is a US production. Narcos isn't a real word, but is acceptable as a slang term. It doesn't need an apostrophe. There's no need for the comma after good, but it's not a howler.
It's a clear punctuation error that stops the sentence from flowing. I can assure you that I would have noticed but as Saint says I would not have mentioned it.
Why are their loads of supersized random avatars at the bottom of the page ffs? I've got a pic of a bloke who looks like he should be on the register and Steve Bruce picking his ****ing snout