Villain is complete unknown. Please no "fold preflop" advice.
If you think this is a clear fold then would you call with 9s8s? KsJs? If its a call then do you call with AK? Assuming we get to the river by checking the turn both times, which I wouldn't typically do with a flush.
PokerStars No-Limit Hold'em, $1.00 BB (9 handed)
Hand History Converter Tool from
FlopTurnRiver.com (Format: 2+2 Forums)
MP2 ($99)
MP3 ($118.80)
CO ($58.20)
Hero ($205.20)
SB ($162.50)
BB ($101.50)
UTG ($47.50)
UTG+1 ($181.15)
MP1 ($88.15)
Preflop: Hero is Button with 4[img]/images/graemlins/diamond.gif[/img], 5[img]/images/graemlins/diamond.gif[/img].
<font color="#666666">
2 folds</font>, MP1 calls $1, <font color="#666666">
3 folds</font>, <font color="#CC3333">Hero raises to $5</font>, <font color="#666666">
2 folds</font>, MP1 calls $4.
Flop: ($11.50) T[img]/images/graemlins/spade.gif[/img], 4[img]/images/graemlins/spade.gif[/img], 8[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
MP1 checks, <font color="#CC3333">Hero bets $8</font>, MP1 calls $8.
Turn: ($27.50) A[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
MP1 checks, Hero checks.
River: ($27.50) 4[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">MP1 bets $75.15 (All-In)</font>, Hero ???