A situation.. (turn the nuts)

[CruS]

Full Tilt No-Limit Hold'em, $0.25 BB (6 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

BB ($16.90)
UTG ($31)
MP ($25.45)
CO ($23.05)
Hero ($24.65)
SB ($32.85)

Preflop: Hero is Button with T[img]/images/graemlins/club.gif[/img], J[img]/images/graemlins/club.gif[/img].
<font color="#666666">1 fold</font>, <font color="#CC3333">MP raises to $1</font>, <font color="#666666">1 fold</font>, Hero calls $1, <font color="#666666">2 folds</font>.

Flop: ($2.35) K[img]/images/graemlins/diamond.gif[/img], 4[img]/images/graemlins/club.gif[/img], Q[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">MP bets $1.8</font>, Hero calls $1.80.

Turn: ($5.95) A[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">MP bets $3.9</font>

Ok, here is the deal.
If I KNOW he has either AK, set or middle PP which he is bluffing with here. Also I think this player is confident and aggressive enough to fire a third barrel.
Can I ever justify just calling the turn?

Reasoning: If he has a set or AK the money is going in on the turn and he will be a dog. If I just call knowing his hand I know the money will go in on the river either way. But if the river brings another A or K I can just call and get away cheap if he has me, and take the pot if he was bluffing w/ a mid PP.

I know raising here is STD but if you have my exact reads here, can you justify a call?