When Neptune tells Emily and her merman father and human mother to return to Brightport to try to make merpeople and humans work more closely together, Emily faces problems with old enemies, her new, half-merfolk friend Aaron, and a mystery related to a group of legendary lost sirens.

Gemma must battle Penn to break the siren curse and secure a future with Alex.

With Penn and Lexi determined to kill Gemma and replace her with another siren, Gemma, aided by Harper and Daniel, must delve into her enemies' mythical past and darkest secrets in a last-ditch effort to protect all that she holds dear.

Elena is excited to visit her cousin Cristóbal. But she gets a lot more than she bargained for when she meets mysterious underwater creatures called Sirenas--and encounters the evil sorceress Shuriki once again.

Years ago, Kahlen was rescued from drowning by the Ocean. To repay her debt, she has served as a Siren ever since, using her voice to lure countless strangers to their deaths. Though a single word from Kahlen can kill, she can't resist spending her days on land, watching ordinary people and longing for the day when she will be able to speak and laugh and live freely among them again. Kahlen is resigned to finishing her sentence in solitude... until...

Sent on a mission to retrieve an ancient hidden map, the key to a legendary treasure trove, pirate captain Alosa deliberately allows herself to be captured by her enemies. Now the only thing standing between her and the map: her captor, the unexpectedly clever and unfairly attractive first mate Riden. Her power to enchant with song makes her a formidable foe-- Alosa is only half-human, the daughter of a pirate king and a siren.

"Deep in the wood lives a witch queen and her eight tree siren daughters. For centuries, they have harvested souls to feed the heartless tree, using its power to grow their ever reaching kingdom of ash, birch, and oak. Owen Merrick lives at the edge of the forest, mapping the stars for the king in his father's observatory. For years, he has resisted venturing over the garden wall, until one day he must enter the woods to find his missing sister. But...

Vowing to get her sister Gemma back from the siren sisters no matter what the cost, Harper must face dangers unlike any she's ever experienced. Fortunately, she has Daniel by her side, a gorgeous guy who's devoted to helping her find her sister--and who's immune to the girls' dark powers.

Moira Alexander has always been fascinated by the deadly sirens who lurk along the shores of her island town. Their haunting songs can lure anyone to a swift and watery grave, but she gets as close to them as she can, playing her violin on the edge of the enchanted sea. When a young boy is found dead on the beach, the islanders assume that he is one of the sirens' victims. Certain that someone has framed the boy's death as a siren attack, Moira convinces...

Kahlen es una sirena, obligada a servir a Oceania atrayendo seres humanos a las acuosas tumbas con su voz, la cual es mortal para cualquier humano que la escuche. Akinli es humano. Un chico amable y guapo, él es todo lo que Kahlen jamas había soñado. Enamorarse pone a ambos en peligro... pero Kahlen no puede soportar mantenerse apartada. ¿Lo arriesgara todo para seguir los latidos de su corazón? Years ago, Kahlen was rescued from drowning by...