Simple question

[paperchamp]

Interesting question, I'd like to see some responses on this. I run into this situation a lot with AK when I flop TPTK against one or two opponents and after betting the flop, I get check-raised on the turn. I almost always end up paying better hands off and playing too passively against hands I beat. Is it a leak to check call the river when this happens? Can you fold in this situation if you have no read? Sorry to be asking more questions but this is a topic that I often struggle with.