Upstairs. But in what condition? Sam slammed the demon back into the wall, quickly reaching for the knife that he had carried in with him. It flipped out into his grasp and before the demon had time to comprehend half of what was coming his way, Sam slashed the creatures throat in half and hit the stairs. The body writhed on the floor behind him, demon grasping at his bloody throat as the last few seconds of his pathetic existence ebbed away from him forever. Strategically, Sam set around the corner that met the top of the staircase. There was already a demon there lying in wait, but Sam managed to gut him before he had much of a shot at duking it out with him. It was probably for the best too, as the third demon thought he'd play it clever by jumping Sam from behind. Combining his abilities with his physical strength, Sam grabbed at the demons arm and easily flipped him over his shoulder. The demon hit the floor hard, but was quick to ram a foot into Sam's knee. Stumbling, Sam reached out in frustration and sent the demon spinning back into a closed door. Whether or not it had been locked was unknown to Sam - the door broke upon impact, ripping apart as the demon fell through it.
Silently and angrily, Sam stepped over to the demon and dragged him to his feet. He made him scream. Then Sam dropped him with the knife like the others, leaving him to bleed to death on the ground without a second thought.
There were four demons. Sam had taken out three. What he didn't know was that the fourth had fled the scene by the time he had hit the stairs. Sam went about searching the upper floor as cautiously as he could have in search for a demon that wasn't there, only managing to locate the room in which Ruby was being held captive instead. He was still on alert. One more demon. He couldn't let that bit of knowledge escape him. But there was Ruby. That had to be Ruby, right? She wasn't wearing the same body, but judging from the unfortunate way that the body she was wearing had been treated...
Sam silently moved to her side. He reached out and grabbed her by the chin, lifting it so that he'd be able to meet her gaze. He'd know for sure. All he had to do was look and see. Without waiting for invitation, Sam reached into her mind and sought her out.