"You're asking us to leave, are you?"
I grab the masked man by the throat, then stab him in the leg.
"Too bad your personal hitman is sitting in a bush spying on your buddies." I snarl. "This time, he won't be able to get rid of any 'nuisances' without letting himself get caught, which he won't do."
I lightly scratch the masked man's face with the tip of my knife, then hold it in front of his eye.
"And your buddies can't come to your rescue, because that would lead them into our trap and we would just gun them down. You can't attack me, because I just need to move my hand forward to kill you on the spot, and even if you have a way to disarm me, you need to do it fast before I choke you into unconsciousness. Or before you bleed out of your femoral artery."
I loosen my grip slightly.
"Or, you could tell us why you're here and nobody has to die. Unless they want to."