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.

"There will be plenty of time for me to beat him soundly once I've gotten what I came for. Sent on a mission to retrieve an ancient hidden map--the key to a legendary treasure trove--seventeen-year-old pirate captain Alosa deliberately allows herself to be captured by her enemies, giving her the perfect opportunity to search their ship. More than a match for the ruthless pirate crew, Alosa has only one thing standing between her and the map: her captor,...

When Gemma runs off with a dangerous clique of powerful girls, Harper teams up with Daniel and faces unprecedented dangers to rescue her sister, who develops increasingly formidable magical abilities.

In the quiet seaside town of Capri, sixteen-year-old Gemma enjoys a close bond with her sister Harper and a growing attraction to next-door neighbor with Alex, but everything changes when, after partying with newcomers Penn, Lexi, and Thea, Gemma discovers she has powers that will force a terrible choice.

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.

Seventeen-year-old violinist Moira Alexander joins with an old friend, Jude Osric, in seeking a killer after the sirens who live near their island are falsely accused of murder. 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...