Bellagio 80/160 4 bet flop then check turn?

[Masquerade]

He might check-raise an overpair or two big cards like AQ but when he 4-bets he must have an overpair or an eight? The fact he doesnt bet the Ten is strange ... perhaps he loves it (TT) or hates it (99)?

I like your turn check as I think you're probably behind but of course worth a call on river.