Great acting. Everyone.
The commenter "Why?" sums up my sentiment. A few holes that don't add up in this show. Why? is right. It's as if the show plot line was going in one direction, then the writers said, "Nah, let's go this way..."
But overall I enjoyed it, highly emotional. It does hit you in the gut.
Worth a watch, but a bit depressing overall if you're not into that kind of thing.