Confessions of a Broadchurch latecomer: do I really need to go back to the start?

I missed the first series of Broadchurch and started with series two. Should I just keep going and pretend I've been watching all along? So here is my dilemma, and I am going to be frank about it. At the time of writing, I have watched 1.197 episodes of Broadchurch. I have watched the whole of the first episode of series two, and I have watched approximately 11 very confusing but quite interesting minutes of the final episode of series one. Here's the problem: should I stay or should I go? When ...