Right before you step into the foyer, you are assaulted by a meaty right hook. Apparently, your attacker (a vengeful one-handed monk) was waiting for you just inside the entrance ....
[You failed both your Listen and Spot checks.]
[You are considered flat-footed; the attack roll is 8+6=14. That's still a miss, I take it?]
{Read page 101 in the PHB. A Defender <the one handed monk> who fails this saving throw is stunned for 1 round (until just before my next action). So he cant act on his initative.}
We will be making opposed grapple checks in place of making an attack. And monks dont suffer the -4 to change lethal to non lethal.