Siren - Season 1 Apr 2026

(Rena Owen): The town eccentric who possesses secret knowledge about Bristol Cove's mermaid history.

(Alex Roe): A marine biologist who forms a deep, complex bond with Ryn. Siren - Season 1

The first season of (originally titled The Deep ) reimagines mermaid folklore through a dark, high-stakes lens in the coastal town of Bristol Cove. The season follows Ryn Fisher , a predatory mermaid who comes ashore to find her sister, Donna, after she is captured by the military for experiments. Core Premise & Storyline (Rena Owen): The town eccentric who possesses secret

: Ryn encounters marine biologists Ben Pownall and Maddie Bishop, who help her navigate the human world while searching for her captured sister. The season follows Ryn Fisher , a predatory

(Ian Verdun): A local fisherman determined to uncover the truth about what took his crewmate. Season 1 Episode Guide The debut season consists of 10 episodes: