My DH models himself (looks wise) in Troels. I'm not complaining!!
OK, I have another theory. Going back to the beginning and all that.
August was killed because of Martyn's infidelity. The guy lost his wife and son so he took August's life as recompense.
So, is it strange Granny? A sort of tit for tat against Henrik? Which certainly points the finger to a stand off with Astrid (we're all assuming she is one of the daughters so let's run with this),
In series 1, Saga couldn't lie (about August being dead) which is why Martyn shot the guy. So, she is faced with another situation where by lying, she risks another death. Given that she feels she has lost Henrik, I certainly feel that she's going to take the bullet for Astrid. 
Haven't googled, dare not, hope I'm wrong.
I have loved these Bridge threads. Father Brown, much as GK Chesterton is a genius, isn't quite the same.