5/10 QQ in rr pot on all spades flop

[KdB]

Villain is almost unknown; only 40 hands together but I've heard that he's 3-betting light. I've been raising a lot, but I don't think he has seen me show down a hand yet.

6-max:
Dealt to Hero[Qc Qh]
Hero raises to $35.00
-folds
Villain raises to $120.00
-folds
-folds
Hero calls $85.00
*** FLOP *** [2s 5s 8s]
Hero checks
Villain checks
*** TURN *** [2s 5s 8s] [4c]
Hero checks
Villain bets $100.00
Hero?

What to do on a blank/A/spades turn?