Nothing To See Here
When the Rogue finally makes his way back out of the Maze in which he was lost for a while, he gets back to the room that he left. When the spell was cast on him, he left the room as he was surrounded, as were the rest of the party, by a dozen Trolls. He returned to find, as the DM told him, 'an empty room, full of dead troll bodies and foul-smelling smoke'.
That's an empty room, full of dead troll bodies and foul-smelling smoke.