Phew. It'll be over soon, and I can stop feeling guilty about the only person on the planet to not be a huge fan of the series.
From the Guardian (and some might find this spoiler-y, so skip it if you're worried):
"He will be faced with a choice where he can be kind to somebody and he won't gain anything, or he can be unkind and he will find a million dollars in a suitcase, and he will choose the nice way, and that will be the end," he explained. "That's how I'm going to finish it, on a very simple choice."