AK with a paired board and facing an overbet on the river. Call?

[Tooty816]

Hey guys. No reads on the guy. I checked behind because I was concerned about the paired board. My flop bet was also on the small end in case he c/r. Do you think this is a bluff that I should call most of the time?

Stakes: $0.50/$1
Stacks: Villain $75 in BB, me $99 in CO

Dealt: A[img]/images/graemlins/club.gif[/img]K[img]/images/graemlins/spade.gif[/img]

Preflop: folded to me, I raise $4, BB calls $3.

Flop (2 players, $8): T[img]/images/graemlins/club.gif[/img]T[img]/images/graemlins/heart.gif[/img]A[img]/images/graemlins/heart.gif[/img]
BB checks, I bet $5, BB calls $5

Turn (2 players, 18$): 4[img]/images/graemlins/diamond.gif[/img]
BB checks, I check

River (2 players, $18): 9[img]/images/graemlins/spade.gif[/img]
BB bets $30, I fold.