Watch Grey's Anatomy Season 15 Episode 4 Online. Best and Free Online streaming for Grey's Anatomy TV Show. We picked the best sites to stream s15e04. 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 Grey's Anatomy Season 15 Episode 4 s15e04 at the top of the list.