Serenity is the twelfth episode of the second season of Siren and the twenty-second episode of the series overall. It aired on June 27, 2019.


Ryn goes back to the ocean to get help for Ben and Maddie’s conditions but discovers that continuing to go back may get harder than she realized the longer she’s on land. But when they learn that there may be a special place in Ryn’s homeland that could help them, Ben, Maddie and Ryn must all venture under the sea together to find the cure. Meanwhile, Helen and Ted connect over their shared family histories.[2]


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Guest Starring


  • Hannah Levien as Janine
  • Georgia Waters as Eliza
  • Donny Lucas as Dr. Reed (Naval Doctor)
  • John Tierney as John
  • Tosca Baggoo as Dr. Herrera
  • Dagan Nish as Vincent (Whistle Blower)
  • Dion Riley as Librarian
  • Yumi Ogawa as Ava (Physiotherapist)
  • Breanna Watkins as Curious Mermaid
  • Mike Kovac as Stunt Thug #1
  • Simon Chin as Stunt Thug #2


Bearded Man: "There. See that?"

Ian: "Wait. Looks like a person. "

Bearded Man: "A person in a place impossible to reach without gear. That's why they're sweeping this whole Eco-terror attack under the rug."

Ian: "Who is?"

Bearded Man: "The military, Man. I been working a Klesco for almost five years. Last year, they put away a tree hugger just for tagging a ship with a peace sign. They don't just let things go. '

Ian: "So you're telling me the United States military stepped in and is covering the attack on the drill ship?"

Bearded Man: "That's what I'm saying. Days after the attack, feds came in-swiped all the footage."

Ian: "Not all the footage."

Helen: "Did you know about this? Did you know it was arson?"

Ted Pownall: "Then don't you think I would have mentioned it? This was all before my time, Helen."

Helen: "But did your father ever say anything to you?"

Ted Pownall: "You know as well as I do that my father was never a big sharer."

Helen: "Well, according to this, my parents were staying in your family's cottage the night of the fire."

Ted Pownall: "Why would your family have been staying in our cottage?"

Helen: "Your guess is as good as mine. But this article says it was arson, which means my father was murdered."

Ted Pownall: "Are you suggesting my family had something to do with that?"

Helen: "I'm just stating the facts! I'm sorry."

Ted Pownall: "

Ryn: "What is it?"

Eliza: "We find more- Male, female. But no young."

Ryn: "We will make more babies when tides change."

Eliza: "Safe to show humans place?"

Ryn: "Yes. It is safe with Ben and Maddie."

Nicole: "Hot off the press."

Ryn: "Not dark anymore."

Nicole: "That's right, Ryn. Not dark."

Maddie: "I don't believe it."

Ben: "You're saying it worked."

Nicole: "I'm saying the echo chamber removed a considerable amount of the damage."

Military Scientist: "There are remnants along the frontal lobe. Mostly begin lesions.Whatever you were exposed to down helped."

Maddie: "Oh, my God."

Ryn: "You are OK."

Ben: "Yes. We're OK."

Nicole: "We'll give you three some privacy. I handed over the recording to the techs. They'll start their analysis in the morning. If this can help keep you safe, maybe we can continue helping your mom with her treatment."

Ben: "Thanks, Nicole."

Nicole: "This pattern of you not trusting me is getting old. What am I supposed to tell my C.E.O.?"

Ben: "Tell him that the mission was a success."

Nicole: "I'm on your side. Remember that."


  • We learn about Ryn and the late Donna's undersea homeland.
  • We discover the fate of Helen's late parents and connection to the Pownall, Hawkins, and Marzdan families.
  • Ian Sutton learns from a Klesco oil employee that the military is involved with the cover-up of the drillship sabotage and views the underwater footage. He later finds Calvin at The Anchor where he is more open to what he said in "The Arrival."
  • It is revealed that Nicole's reason for aiding the military is to help her elder brother.
  • The movie that Ben, Ryn, and Maddie were watching was Disney's 20,000 Leagues Under The Sea.
  • At the end of the episode, Nicole reveals that she has placed hidden cameras all over Ben's houseboat.



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