Non spoiler thoughts on A mother's son
First of all, English actors are great. I'd seen Hermione Norris in MI5 and she was fine there, but this was a much better performance, I think. Nice to see Nicola Walker -- Ruth Evershed in MI-5 - in the role of the police detective.
And I think Martin Clunes deserved the lead just as much as the guy who played Hermione's ex-husband (who I first I thought was Danny Steele, then realized, nah, couldn't be).
And I agree with cc.cookie that it's odd to run those dorky Churchill insurance commercials starring Martin Clunes in the same program in which he has a major role. Have never seen that done before.