Opponent is unknown so after him double check can try take pot or better go to cheap showdown?
PokerStars, Hold'em No Limit - $0.01/$0.02 - 6 players
Replay this hand on Pokeit - https://pokeit.co/public/625ccZ4Ps/r
UTG: $1.87 (94 bb)
MP: $2.00 (100 bb)
CO (Hero): $2.00 (100 bb)
BU: $0.86 (43 bb)
SB: $4.31 (216 bb)
BB: $2.22 (111 bb)
Pre-Flop: ($0.03) Hero is CO with A♠ J♠
2 players fold, Hero raises to $0.06, 2 players fold, BB 3-bets to $0.24, Hero calls $0.18
Flop: ($0.49) 4♥ K♦ 9♣ (2 players)
BB checks, Hero checks
Turn: ($0.49) 5♠ (2 players)
BB checks, Hero bets $0.24, BB raises to $0.88, CO (Hero) folds
Total pot: $0.97 (Rake: $0.03)
BB wins $0.94