Ok, so no replies so far. I guess I should post more routine hands.
My thoughts: No flop raise on a board like this makes me kinda discount a set. I have the :Kd: in hand and the :Ad: is on the flop. That eliminates a lot of flush hands he could have. AT? JTd? Bluff? kinda small raise size for a bruff. How often is a king an out here? How often does he check the river behind with a worse hand?