Flopped straight - deep NL100

[Rooger]

Villain is 70/20/1.67. I have seen him make some very strange moves - I've seen him limp JJ twice and checking it all the way down when the flop came QQ8, and only betting the river small when undercards fell all the way.
He has CR all-in two times on the turn, having the nuts.


What do you do on the river? Check-call a reasonable bet? Value bet? Both the turn & river were scare cards, but I think he'd raised the flop with a set.

Party Poker No-Limit Hold'em, $ BB (6 max, 6 handed) FTR converter on zerodivide.cx

Hero ($195.45)
MP ($90)
CO ($415.80)
Button ($101.35)
SB ($103.55)
BB ($68.50)

Preflop: Hero is UTG with K[img]/images/graemlins/spade.gif[/img], Q[img]/images/graemlins/club.gif[/img]. SB posts a blind of $0.50.
<font color="#CC3333">Hero raises to $4</font>, <font color="#666666">1 fold</font>, CO calls $4, <font color="#666666">2 folds</font>, BB calls $3.

Flop: ($12.50) 9[img]/images/graemlins/club.gif[/img], J[img]/images/graemlins/diamond.gif[/img], T[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(3 players)</font>
BB checks, <font color="#CC3333">Hero bets $10</font>, CO calls $10, BB folds.

Turn: ($32.50) 9[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">Hero bets $20</font>, CO calls $20.

River: ($72.50) 4[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>

Hero??