This is one of my favorite shows of all time. For those of you just starting, when Tom Hardy comes in, hold on! (which is not to say the action up to that point is not intense enough) The man is such an acting chameleon, but of course with one of his heroes being Gary Oldman, why wouldn't he be? So many plot twists and sub-plots in the show. I just started season 4 so I would like to second the request for no spoilers.
Being English though, some of the accents sound a bit contrived. You bloody colonials probably won't notice....
Happy New Year all!