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.

Forced to work as a Siren and lure strangers to their deaths after being rescued from drowning by the Ocean, Kahlen falls in love with a human and defies the rules of her service in order to follow her heart.

"Saoirse Sorkova survives on lies. As a soldier-in-training at the most prestigious barracks in the kingdom, she lies about being a siren to avoid execution. At night, working as an assassin for a dangerous group of mercenaries, Saoirse lies about her true identity. And to her family, Saoirse tells the biggest lie of all: that she can control her siren powers and doesn't struggle constantly against an impulse to kill. As the top trainee in her class,...

"Lolly Salt's three sisters are sirens--young women who lure ships to their doom--and as Lolly's 13th birthday approaches she's about to become one too. But when it becomes clear that someone in town knows the Salt girls secret, Lolly sets out to learn how this happened to her family and if she can prevent it"--

"In the alien catacombs of Rainshadow, there are creatures whose compelling songs lure the unwary to their death. That's why Rafe Coppersmith, hired to clear out the catacombs for exploration, needs a music talent. He knows the perfect one, but she probably doesn't want anything do with him. Ella Morgan had once fallen hard and fast for Rafe, but then he disappeared for months and he's not about to tell her why. Ella, too, has secrets that only her...