interesting lil turn spot

[BigBadBabar]

2/4 fullring
Converter

villain is 26/8/1 over 650, no solid read other than the stats

Pre-flop: (10 players) hero is MP2 with A[img]/images/graemlins/spade.gif[/img] Q[img]/images/graemlins/diamond.gif[/img]
UTG calls, 3 folds, <font color="#cc0000">hero raises</font>, 5 folds, UTG calls.

Flop: 3[img]/images/graemlins/diamond.gif[/img] 5[img]/images/graemlins/diamond.gif[/img] 4[img]/images/graemlins/spade.gif[/img] (5.5SB, 2 players)
UTG checks, <font color="#cc0000">hero bets</font>, UTG calls.

Turn: K[img]/images/graemlins/spade.gif[/img] (3.75BB, 2 players)
<font color="#cc0000">UTG bets</font>, hero ?