A strange phone call points the police to a suspect and his private home. Meanwhile, Wu Ming-han decides to chase down a different lead by himself.
As an unprecedented crisis grips GG Precinct, Ming-han's instinct guides him to someone who has slipped under the radar the entire time.
Shui-yuan's meeting with Huang Hsian culminates in a colossal misunderstanding. To lure out the killer, Chang Yung-kang makes a risky announcement.
Under The Man's instruction, Stu gets the gang jobs in the prison coke factory while Hugo works a special job for Selma - the assassination of her brother at a dinner being thrown for their boss. Things go awry. Stu's betrayal unspools. Blood spills.
As everything comes to a head, Nana confronts her lies and opens up to her colleagues, to Mathias and Lucia — and to a new acquaintance.
Will and Carlton feel the pressure of running "Blackcess"; everyone rallies around Hilary.
As Merlinda, Nerissa, Sasha and Alex make their way back to Mertropia, they discover that an unwelcome force has entered through the portal.
Nerissa and Sasha look for Merlinda on land. But with her communication bracelet broken, the princess will have to trust her new human friends.
A day at the amusement park proves relaxing — and perilous — when the gang's greatest threat makes an appearance. Alex sets out on his own mission.
While Merlinda, Nerissa and Sasha use their powers to help Tyler and Celia save the rescue center, Barbarossa and Tempesta concoct a plan of their own.
Celia and Tyler help Merlinda, Nerissa and Sasha adjust to their new school above the surface and try to find answers about their missing map.
An old foe becomes a friend as Merlinda returns to Pirate Cove to try and save Nerissa, Alex and the pearls. Fred learns the truth about his father.
The group continues their search for the missing pearls inside a dormant volcano. But Barbarossa is waiting in the shadows to disrupt their plans.
A whale rescue leads Merlinda and her friends further on their quest to find more pearls — but danger is waiting below the surface.
With a newfound confidence, Merlinda is ready to defeat Barbarossa once and for all. Will she be able to save her friends — and Mertropia?
Nana is nervous about Mathias’s reaction to her big news. Helle calls her in for a serious conversation about her behavior at the clinic.
When the pearls powering Mertropia start to fade, Princess Merlinda must break the rules and swim beyond her mermaid home to save her father's life force.
Yuta starts to get worried about Saki and asks Akiko for advice. Akiko tells him that he should take Saki out for a break now and then, even if he has to insist. Later, when Yuta tries to talk to Saki about the pool trip with Maaya, Saki reacts harshly.