kk vs unknown

As I said, I know nothing about this opponent, just sat down for two orbits. Nothing out of the ordinary.

Ultimate Bet 0.50/1 Hold'em (6 handed) FTR converter on zerodivide.cx

Preflop: Hero is SB with K[img]/images/graemlins/heart.gif[/img], K[img]/images/graemlins/diamond.gif[/img].
<font color="#666666">1 fold</font>, <font color="#CC3333">MP :#A500AF(Villain)/ raises</font>, <font color="#666666">2 folds</font>, <font color="#CC3333">Hero 3-bets</font>, <font color="#666666">1 fold</font>, <font color="#CC3333">MP :#A500AF(Villain)/ caps</font>, Hero calls.

Flop: (9 SB) 7[img]/images/graemlins/diamond.gif[/img], 7[img]/images/graemlins/club.gif[/img], 3[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">Hero bets</font>, <font color="#CC3333">Villain raises</font>, Hero calls.

Turn: (6.50 BB) 8[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
Hero checks, <font color="#CC3333">Villain bets</font>, <font color="#CC3333">Hero raises</font>, <font color="#CC3333">Villain 3-bets</font>, Hero...

I don't know if I want to cap this turn against an unknown, but with the preflop cap, I think I am only behind to aces and ahead of most other hands.