Kate Winslet is superb. As soon as I started watching this, I felt like I was watching the American version of the British show "Happy Valley". Next might be a SPOILER, but I don't really think so, since much is revealed early on. In Happy Valley, the female cop has lost a daughter (as opposed to a son) to suicide and is raising her grandson, when the boy's father is released from prison and wants his son (as opposed to a daughter-in-law just out of rehab). There is also doubt about the grandson's possible emotional problems in both. The lead characters of both shows have hair-trigger tempers and both actresses are fantastic. There are other similarities in the basic set-up of the characters, but the storylines have their individual trajectories and I'm thoroughly enjoying Mare so far.