Party Poker No-Limit Hold'em, $ BB (8 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver)

saw flop|saw showdown

Hero ($25)
BB ($22.72)
UTG ($47.96)
UTG+1 ($41.05)
MP1 ($24.15)
MP2 ($22.25)
CO ($21.80)
Button ($30.15)

Initial read on villain is a tight/passive.Looks like the type to get married to TPTK/Overpair so if I hit villain will likely stack off to me.

Preflop: Hero is SB with A, T. Hero posts a blind of $0.10.
1 fold, UTG+1 calls $0.25, 1 fold, MP2 calls $0.25, CO raises to $1, 1 fold, Hero (poster) calls $0.90, 1 fold, UTG+1 folds, MP2 calls $0.75.

Flop: ($3.50) 9, K, 5 (3 players)
Hero checks, MP2 checks, CO bets $3.35

Your move.