Supernatural Season 6 Episode 7 (Supernatural s06e07) with title “Family Matters” aired on Friday, November 5th 2010 at 09:00 pm via CW Network.
Here is summary for Supernatural Season 6 Episode 7 :

Dean becomes suspicious of Samuel’s motives, but Sam isn’t sold on the idea that their grandfather is doing anything wrong. The brothers go along on a hunt with Samuel and the other Campbells, but things go terribly awry.