Watch Blue Bloods Season 8 Episode 18 Online. Best and Free Online streaming for Blue Bloods TV Show. We picked the best sites to stream s08e18. Simply pick a site below and click "Watch Now!" button next to it. Some of the links may be broken, please upvote the working and good links so other users see those links for Blue Bloods Season 8 Episode 18 s08e18 at the top of the list.