If a major character named ''Nathanson'' is involved in this year's plot at the moment, I am (sadly) unaware of same, and obviously, I shall have to pay more attention.
Best wishes for good telly dramas, Mystic, but these days, apart from the pretty much over the top series '24', there are either not many or not any.
I apologise for not knowing the answer you require.
Nonetheless, best to you, and FReegards!
Nathanson is the creepy bald guy who was giving Walt all his instructions by phone and apparently has the capability to tap into Jack's secure lne at CTU, enabling his capture in the last episode. He's played by an actor named Geraint Wyn Davies.
I guess the "5th Hour" is the first time he's shown up, and apparently no one else knows who he is either.