A journey of survival begins when an army of Witchfinders attacks the village of Alkenny.

The twins struggle to keep a secret from their mother.

An attack on the village leads to sacrifice and new challenges.

Mermaid 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 mermaids to come…

Ben and Xander are left dealing with a shocking discovery about Chris and his connection to the military. Meanwhile, Helen and Maddie reluctantly seek help from the hybrids as the…

Ben faces a choice that has rippling consequences amongst mermaid, hybrid and human alike, as the truth about mermaids is exposed.

Mermaids and humans join forces in a radical plan to stop the oil company, but their efforts have a devastating effect. And facing an uncertain future, Ben, Maddie and Ryn…

Ben, Maddie and the other humans deal with the fallout from the attack on the oil rig, while the mermaids reacclimate to their ocean home. Ryn comes back to land…

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…

Ryn fights to maintain leadership of the pack when the other mermaids question her loyalties. Ben interferes in a mermaid ritual causing friction between himself and Ryn, meanwhile, Helen discovers…

Ryn continues to try to teach the other mermaids to be more human in order to better assimilate, but some are starting to resist her, causing Ryn to wonder if…

Dale 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 the mermaid pack to get on…

Ben, Maddie and Ryn desperately try and keep the newly arrived mermaid pack hidden from the rest of the town, but the new mermaids’ quick degradation on land forces them…

After all the fighting and loss, Clarke and her friends have reached the final battle. But is humanity worthy of something greater?

Lives are left in danger following the arrival of a new threat. Lincoln and Bellamy decide to break into Mount Weather.

Wick and Raven are faced with a setback. Maya and Jasper witness a terrible act.

After discovering a horrifying project in Mount Weather’s medical ward, Clarke joins forces with an unexpected ally.

Sam and Dean must stop Rowena, who is on a deadly mission. Meanwhile, Castiel looks to heaven to recruit angels for an impending invasion but is shocked by not only…

After Benny gets brutally beat up by some vampires, he calls Dean for help. Dean abruptly packs up and tells a confused Sam that he’s taking a “personal day.” Benny…