(( Ha, I have no idea how many potential heirs actually died in that whole 'diplomacy' mission to Miring, but it sure was a pretty large number! ))
Trubaldsome, finally satisfied that Feodair would not be recognised, staggered away from the fireplace, gasping for breath through the smoke. Shaking with nerves, he dropped his snuffbox with a clatter on the floor, then bent to pick it up but instead fell to his knees and retched violently across the floor.
'Bloody hell this is not going to plan!' He thought, and very nearly broke down crying from the unfairness of it all. Why couldn't that foolish noblewoman have just agreed to testify? Stupid females and their hormones, he grimaced.
Finally rising to his knees after inhaling practically half of the snuff in one snort, he took several deep breaths-unfortunately rather foul-smelling ones- And fought to compose himself.
Once he wasn't on the verge of a stroke, he moved wearily over to gather up his clothes and tug them back on, straightening himself up with determination. Just as running footsteps and shouts closed in down the hallway, he reached across his desk, picked up his hat, and placed it reverently back upon his head.
Thus attired, he took up his sabre once more, and took up position about as far away from the foul-smelling fireplace as he could, and sought to look suitably shocked and aghast, without appearing undignified.
Then his men (and likely the palace guard, etcetera) burst into the room, no doubt observing the bloodstains and vomit spattered about the room, the thick, greasy clouds of smoke, the charred body half-fallen into the fire, and the young lord of Miring looking rather dishevelled and dazed where he stood, blood on his sword and soot staining his clothes.
((That last paragraph might change depending on what the GM/others say, I dunno... ))
Trubaldsome struggles for a while to compose himself, then dresses back in his (still, despite his efforts, dirty) clothes, grabs up his sword and prepares to put on a big act of being shocked and horrified that an assassin would burst into his room.