Nicole helps Ben and Maddie research the siren song appropriately. Other discoveries come to light.
Ryn returns to Ben and Maddie. The thrupple must learn to trust an outsider.
After Sean's body washes up in a fishing net, things get sketchy for Ben, Sheriff Bishop, and Xander.
Ben's struggling with Ryn's siren song, as she also struggles to hold onto power amongst her people.
Ben struggles with the siren's song. Xander finds out about the merpeople on land.
More of Ryn's people come to the shores. But something's forcing them there.
Helen reveals more of her history. Bristol Cove deals with the aftermath of a merfolk attack.