Villain is unknown

PokerStars No-Limit Hold'em, $0.50 BB (5 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver)

Hero ($49.25)
MP ($61.75)
Button ($56.40)
SB ($151.50)
BB ($55.60)

Preflop: Hero is UTG with J, T.
Hero calls $0.50, 2 folds, SB raises to $1, BB calls $0.50, Hero calls $0.50.

Flop: ($3) 3, 9, J (3 players)
SB checks, BB bets $2.5, Hero raises to $10, SB folds, BB raises to $54.6, Hero calls $38.25 (All-In).