Villain is a multitabling TAG.

I raise A[c] K[c] UTG to 10 and he calls in EP.

Flop is Q[h] J[d] 5[c].

He ck/calls me 4/5 pot CB.

Turn is a brick and I check and he checks behind.

Okay when he cks behind there I'm 90% sure he doesn't have a Q.

River is a brick. I lead 4/5 pot.

Like?

It's hard to bluff the river when you check the turn; however, its pretty hard for a TAG to call because he's a TAG and also because that's how so many donks play a weakish Q.

How many weak Queens are you PFRing UTG?

And I agree with the Snowman, you have decent SD value here if you can get there.