Watch House Knight Fall Season 6 episode 18 Stream Online. A Renaissance man is very old and needs to be taken care off. But the team takes an unexpected real life experiece from the old man. This is all about to happen in the House Knight Fall Season 6 episode 18. In this episode, House and the team take on the case of Sir William, a "knight" in a closed-off community of men and women living according to the ideals of the High Renaissance. As the team searches the medieval village for environmental factors contributing to Sir William's rapidly deteriorating health, Thirteen and Sir William debate the acts that define honor and loyalty, especially in regard to the "queen" of the community, one of Sir William's most frequent visitors. The House Knight Fall S06E18 shows Monday, April 19, 2010 8:00 PM-9:00 PM EST on FOX. Watch House Knight Fall Season 6 episode 18 Stream Online.