We haven’t learned exactly what happened in the end between him and Jamie at Culloden since Jamie has suppressed his memories of that day, but I hope that Diana is going to address that before the end of the series so I can see if I am right or if he is indeed pure evil.
Didn’t Jamie finally realize that Murtagh killed BJR? Or did I totally imagine that? (And let’s all pause here and say a prayer of thanksgiving to Duncan LaCroix’s eyebrows, shall we?)
(Your post was full of interesting tidbits, at this point I have not had enough coffee to chunter on anything but Duncan’s eyebrows)