Siren - Season 2 - Eps 12: Serenity
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.
About Siren

Title: Siren
First Air Date: 2018-03-29
Last Air Date: 2020-05-28
Status: Canceled
Rating: 7.734/10 (from 3367 votes)
Language: EN
Seasons: 3
Total Episodes: 36
Network: Freeform
Genres: Sci-Fi & Fantasy, Drama
Production Companies: Unknown
Synopsis
The coastal town of Bristol Cove is known for its legend of once being home to mermaids. When the arrival of a mysterious girl proves this folklore all too true, the battle between man and sea takes a very vicious turn as these predatory beings return to reclaim their right to the ocean.
Cast

Eline Powell
Ryn

Alex Roe
Ben Pownall

Fola Evans-Akingbola
Maddie Bishop

Ian Verdun
Xander McClure

Rena Owen
Helen Hubbell