In S06E10 , "Caged Heat" , Sam takes khe dao, con dao back from Meg. Can bạn tell me when exactly the Mất tích it? I really need the answer. My mind is blowing.

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