Siren (2018–2020)

1. S01E01PilotMarch 29, 2018 6.4The coastal town of Bristol Cove, once known for being home to mermaids, is turned upside down with the arrival of a mysterious girl.
2. S01E02The LureMarch 29, 2018 6.7Ben and crew of The North Star uncover a device emitting a strange sound. Meanwhile, Ryn finds shelter in the home of the local folklore exp
3. S01E03Interview with a MermaidApril 5, 2018 6.9Dale and the local police’s investigation starts pointing directly to Ryn, meanwhile Xander and Calvin’s search for Chris heats up when they
4. S01E04On the RoadApril 12, 2018 7.1When the military facility goes on high alert, Chris manages to escape, but he’s not the only one who gets out.
5. S01E05Season's bestCurse of the Starving ClassApril 19, 2018 7.4Ben begins to investigate some suspicious overfishing, meanwhile Decker ramps up his efforts to find his escaped mermaid and shows the true
6. S01E06ShowdownApril 26, 2018 7.2When Ben and Maddie attend his mother’s fundraising gala, an unexpected guest shows up and offers to put an end to the overfishing that’s th
7. S01E07Dead in the WaterMay 3, 2018 7.0When Ryn is taken in for questioning, Maddie rushes to her rescue. Meanwhile, Ben and Xander return to the deep sea to search for answers, o
8. S01E08Being HumanMay 10, 2018 7.0Bristol Cove mourns a loss causing Ryn to experience a new human emotion.
9. S01E09Street FightMay 17, 2018 7.0Donna comes ashore with two other members of her colony to bring Ryn back home. When mermaids once again begin wreaking havoc throughout the
10. S01E10AftermathMay 24, 2018 6.0In the season finale, the enchanting siren song takes hold of Ben and Decker. Meanwhile, Dale must answer for the escalating crime in Bristo

Season 1 ranked & reviewed

1. S02E01The ArrivalJanuary 24, 2019 7.3With more mermaids landing at Bristol Cove’s shores, the threat of discovery increases. After his encounter with the siren song, Ben tries t
2. S02E02The Wolf at the DoorJanuary 31, 2019 7.2Ben, Maddie and Ryn desperately try and keep the newly arrived mermaid pack hidden from the rest of the town, but the new mermaids’ quick de
3. S02E03Natural OrderFebruary 7, 2019 7.2Ryn fights to maintain leadership of the pack when the other mermaids question her loyalties. Ben interferes in a mermaid ritual causing fri
4. S02E04Oil & WaterFebruary 14, 2019 7.7Ryn decides they need to find another solution for housing the mermaids, as hiding them becomes increasingly difficult. Ben becomes a mentor
5. S02E05Season's bestPrimal InstinctsFebruary 21, 2019 7.8Ryn continues to try to teach the other mermaids to be more human in order to better assimilate, but some are starting to resist her, causin
6. S02E06Distress CallFebruary 28, 2019 7.4Dale copes with the fallout from Maddie and Ryn’s encounter with the man from Susan’s past, while Katrina continues to persuade the rest of
7. S02E07EntrapmentMarch 7, 2019 7.0Tensions are rising following a shocking discovery. And living in a tank rather than the ocean is starting to have an adverse effect on many
8. S02E08LeverageMarch 14, 2019 7.6Mermaids and humans join forces in a radical plan to stop the oil company, but their efforts have a devastating effect. And facing an uncert
9. S02E09No North StarJune 13, 2019 7.2Ben, Maddie and the other humans deal with the fallout from the attack on the oil rig, while the mermaids reacclimate to their ocean home. R
10. S02E10All InJune 20, 2019 7.2With Elaine Pownall’s health worsening, she seeks treatment from the military’s medical trial using mermaid cells, but the procedure doesn’t
11. S02E11Mixed SignalsJune 27, 2019 7.5Maddie and Ben contend with how to help Ryn knowing that in order to help Elaine get better, they will need to continue the procedures on Ry
12. S02E12SerenityJune 27, 2019 7.2Ryn 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 real
13. S02E13The OutpostJuly 11, 2019 7.0Mermaid mating season has begun, with Ryn knowing she will need to go back to the sea to help her colony. The hybrids convince one of the me
14. S02E14The Last MermaidJuly 18, 2019 7.0Mating season turned out to be less successful than everyone had hoped, leading them to question the possibility of the mermaids procreating
15. S02E15SacrificeJuly 25, 2019 7.0Ben and Xander are left dealing with a shocking discovery about Chris and his connection to the military. Meanwhile, Helen and Maddie reluct
16. S02E16New World OrderAugust 1, 2019 7.0Ben faces a choice that has rippling consequences amongst mermaid, hybrid and human alike, as the truth about mermaids is exposed.

Season 2 ranked & reviewed

1. S03E01BordersApril 2, 2020 5.5As an old friend visits Helen, a new mermaid arrives leaving Ryn questioning their motives. Maddie learns the truth behind Ian’s death, as B
2. S03E02RevelationsApril 2, 2020 8.5When another mysterious death is uncovered in Bristol Cove, Ryn suspects Tia. Maddie befriends a new acquaintance in Seattle. Helen warns th
3. S03E03SurvivorApril 9, 2020 7.0Ryn seeks help only to learn the secret existence of her unborn child. Ben sets out on a dangerous path to help his mom, while Xander tries
4. S03E04Life and DeathApril 16, 2020 7.0Ben and Maddie help Ryn guide her surrogate though a life-threatening delivery. Helen and Xander deliver a hybrid corpse to Beth at The Ranc
5. S03E05Season's bestMommy and MeApril 23, 2020 9.0Ryn returns to land to explore human motherhood. Maddie and Robb come across a gruesome discovery. Ben experiences mysterious side effects a
6. S03E06The IslandApril 30, 2020 9.0Ryn discovers a refuge of injured mermaids that escaped Tia’s violent takeover. Ben and Xander get caught in a battle with Tia’s troops. Mad
7. S03E07Northern ExposureMay 7, 2020 8.0Ryn, Ben, Maddie must recruit new allies in the fight against Tia. Helen seeks answers when she’s haunted by Donna’s spirit. Tia obtains dan
8. S03E08‘Til Death Do Us PartMay 14, 2020 9.0Ryn, Ben and Maddie must protect Bristol Cove from Tia’s army. Meanwhile, Ben’s injections are producing unexpected results, which alarms bo
9. S03E09A Voice in the DarkMay 21, 2020 6.0Tia unleashes a deadly attack on Bristol Cove. Ryn, Ben and Maddie race against time to find a cure for Xander’s mysterious illness, while a
10. S03E10The Toll of the SeaMay 28, 2020 8.0In an effort to save Hope, Ryn and Ben confront Tia in an undersea battle between the mermaid tribes. Maddie and Robb work to find a cure fo

Season 3 ranked & reviewed