Zac wants to know exactly how he became a merman, so he decides to return to Mako to find out the truth. However, the girls know that Zac doesn't know about the underwate ...

Lyla convinces Sirena to use her beautiful singing voice to enchant Zac to follow their orders and remove his powers. This backfires, however, when her voice enchants Dav ...

The first full moon since Zac was transformed into a merman has arrived and the girls believe that complete isolation from the moon will rob Zac of his powers. Despite th ...

Believing that Zac's unusual behavior is a result of feeling lonely, Evie decides to throw Zac a surprise pool party, against both Cam and Zac's wishes. Because of his be ...

Joe, David's brother has bought a new boat and decides to take it out for a spin. His fish finder locates a dolphin, but that dolphin is actually Nixie. ...

Rita tells the girls to go to the Moon Pool while it is raining, where they will be safe. Nixie obeys, but Lyla and Sirena do not. They attempt to use the Moon Ring to st ...

Nixie and Sirena won't help Lyla try to zap Zac's powers, so Lyla decides to do it alone. This misfires when a waitress spills a drink on Lyla and Lyla rushes to hide in ...

Attempting to capture Zac in his natural environment, Sirena, Lyla, and Nixie follow him to school. When their plan fails, the school principal, Rita Santos confronts the ...

Sirena, Lyla and Nixie must turn Zac back into a land boy. Using Sirena's Moon Ring, they give themselves legs and walk on land to begin their task. ...

It's a full moon and the three mermaids Nixie, Lyla and Sirena are tasked to guard Mako and the moon pool. While Zac and Cam go camping on Mako island. When Zac falls int ...

The Jade Wolf pack is devastated after Heidi's attack, leaving Jordan and Maia in a corner. Jace encourages Clary to take a break from hunting Jonathan, not realizing tha ...

Clary tries to find a way to remove Lilith's rune. ...

Clary offers the Clave something it wants in return for sparing her life, with disastrous results. Simon's past returns to haunt him and his family. ...

Clary awaits judgment while imprisoned by the Clave. Magnus, Alec and Isabelle try to save Jace. Simon learns more about the queen of Edom. ...

With the Owl's identity revealed, Alec, Isabelle, and Clary head to Alicante to try and find a way to stop him. Luke and Simon team up to track Lilith's latest possible v ...

Clary teams up with Magnus to investigate a recent demon attack. Simon is stunned when he's visited by someone he never thought he'd see again, and who now won't seem to ...

Someone is out to get Simon and Jace is on the hunt to find out who it is, meanwhile Clary turns to Luke to find a way to help Jace. Alec worries about the future of his ...

Alec doubles his efforts to find the Owl. Jace begins to fear his hallucinations may hold roots in his past and turns to Luke for guidance. ...