Ep 15. Sacrifice

Ryn and Ben continue their quest to find a cure for Ryn's unusual condition, while Maddie tries to help Ryn reconnect with her sister Donna, who is still acclimating to life on land. Meanwhile, tensions rise when a group of scientists arrive in town to investigate the mermaids, and Bristol Cove's mayor orders a sacrifice to be made to appease them. As the situation becomes increasingly dire, the humans and mermaids must work together to find a way to avoid disaster. As the episode unfolds, secrets are revealed, alliances are formed and broken, and sacrifices are made in order to protect those who are most dear. With the fate of Bristol Cove hanging in the balance, the stakes have never been higher for the mermaids and their human allies. Will they be able to overcome the forces that threaten to tear them apart, or will they succumb to the darkness that threatens them from all sides? Tune in to Siren season 2 episode 15, "Sacrifice," to find out.