Checkraised with TPTK

[wildzer0]

My biggest problem in limit holdem is knowing when to fold a good hand to aggression. This is villian's first hand at the table so I have no clue how he plays. Give no read, do I call down on the turn check raise or can I safely assume I'm badly beaten?

Party Poker 0.50/1 Hold'em (9 handed) FTR converter on zerodivide.cx

Preflop: Hero is MP2 with K[img]/images/graemlins/spade.gif[/img], A[img]/images/graemlins/heart.gif[/img].
3 folds</font>, Hero raises</font>, 4 folds</font>, BB calls.

Flop: (4.50 SB) A[img]/images/graemlins/club.gif[/img], 2[img]/images/graemlins/diamond.gif[/img], 2[img]/images/graemlins/club.gif[/img] (2 players)</font>
BB checks, Hero bets</font>, BB calls.

Turn: (3.25 BB) Q[img]/images/graemlins/club.gif[/img] (2 players)</font>
BB checks, ]Hero bets</font>, BB raises</font>, Hero calls.

River: (7.25 BB) 9[img]/images/graemlins/spade.gif[/img] (2 players)</font>BB bets</font>, Hero calls.

Final Pot: 9.25 BB