In S06E10 , "Caged Heat" , Sam takes khe ナイフ back from Meg. Can あなた tell me when exactly the ロスト it? I really need the answer. My mind is blowing.

I think Meg and the other demons she was with just took the ナイフ from Sam and Dean earlier that episode, when they captured the brothers. I can't remember them losing it または not having it before then.