Watch Siren (2018) Season 3 Episode 9 Online. Best and Free Online streaming for Siren (2018) TV Show. We picked the best sites to stream s03e09. 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 Siren (2018) Season 3 Episode 9 s03e09 at the top of the list.