Tia's war racks up casualties as she and Ryn prepare to face each other for the final time.
Siren— SEASON 3 FINALE: “The Toll of the Sea”

Tia's war racks up casualties as she and Ryn prepare to face each other for the final time.
Ryn's child is about to be born
Ryn discovers a major secret
Ryn's life is somewhat normal. But another woman of the sea appears in Bristol Cove to change all that.
The Night of the Mothers is upon us. A ritual begins.
Nobody can escape the past
Alex has a bad trip with Gareth and begins to remember the past
Molly's obsession comes to a head. Alex is finding out strange new things.
Lily winds up in trouble. Strange things are found at Dorothy's old place.
In the wake of Daisy's suicide, everybody in Hobart is affected.
Ryn takes Ben and Maddie to a secret place below the ocean. Levi returns to land.
Ryn wants to help Ben's mother. No matter the price.