Thallos' eyes darted to the knife as it was only a few inches from his face, and although the veins popped out in his head his legs did not stop so instantly. Turning towards it, e exposed his left cheekbone, which got a gash across it as the knife zipped past and clattered against some wall across the road.
The knife had come from the right, ad judging by the speed and velocity, it couldn't have been a rigged mechanical system; it was far too precise for that. And yet, even as his great brow knitted in fury, and his eyes scanned the darkness in that split second for the unseen figure, the logical outcome of attacking a bladed assassin who had the absolute advantage over him while being completely unarmed in the dark with no witnesses spoke the truth very clearly.
So that is why Thallos, his eyes set like mental daggers of his own, trying to pierce his invisible foe, bolted like a lunatic down the road at the top of his speed towards the residence that, to his misfortune, was still a ways off.