As he's left to slowly die in the shrieking Shack Severus thinks that the devil has come for him when in his fading vision he sees demonic golden eyes slink out of the shadows to approach him.
So no one was more surprised then him to wake, Alive and, well mostly whole, in a dark room wrapped up and bound by his ankles to a wrought Iron bed base. in a chair next to the bed a woman sit watching him closely, dark hair falling in wild ringlet she reminds him of someone, but he can't place who. before he can speak she points a wand at him
"Severus Snape I saved you from death Your masters are dead, and unless you wish to join them You will serve me until your debt is paid." she says clearly her voice commanding, then it hits him, this woman is very much like a particularly vindictive and violent death eater, nothing short of a mad man.
"What do you want?" he asks finally managing to find his weakened voice. the woman's expression never changes "You will help me Kill My brother and any other death eater that still lives."