Stream the full Siren Season 3 Episode 1 movie online for free in crystal-clear HD quality. No downloads required—just press play and enjoy the action, complete with English subtitles for an enhanced viewing experience.
As an old friend visits Helen, a new mermaid arrives leaving Ryn questioning their motives. Maddie learns the truth behind Ian's death, as Ben fights for his mother's treatments. While Xander is inspired to take on more responsibility.