The New York Times best-selling series continues with the half-mermaid embarking on an icy and perilous journey to the Land of the Midnight Sun. Strange storms are blowing up from the ocean, caused by the nightmares of Neptune, King of the Sea. Convinced that his dreams herald an approaching threat, Neptune enlists half-mermaids Emily Windsnap and Aaron for a top-secret mission to find and eliminate the source of the trouble. But Emily and Aaron quickly get in over their heads in the frigid waters of the frozen north. Deep within an alpine lake where magical reflections show what could be rather than what is, the two discover a trove of stolen memories and Neptune's darkest secret. Double-crosses and double-takes abound in Liz Kessler's fifth magical mermaid adventure.

Emily Windsnap is finally enjoying a swimmingly peaceful life on Allpoints Island, hanging out with her mermaid BFF, Shona, and her new friend Aaron (half-merperson like herself ). But their idyll is cut short when Emily learns that the Windsnaps and friends must return to their old home in Brightport, where construction projects are threatening a secret mermaid community under the sea. Neptune’s mandate? No less than an interspecies intervention to bring merpeople and humans together, a task the imperious god feels the mixed Windsnap family is well suited for. There are just a few snags for Emily, however, like dealing with old nemeses Mandy and Mr. Beeston, figuring out her feelings toward Aaron, and untangling a high-suspense mystery related to a group of legendary lost sirens. Everyone’s favorite half-mermaid is back with a splash in a sparkling new adventure her fans will be eager to get their fins on.

Philippa is excited to spend her vacation with her friend Robyn, but she has no idea just how much excitement awaits. When a magic spell carved on a mysterious circle of rocks transports Philippa to fairy godmother headquarters, she learns that her own mother is in danger. To protect her mom from a serious accident, Philippa must pretend to be a fairy, while Daisy, her fairy godsister, returns to Earth as Philippa! And that's just the beginning of their adventure. After passing a harrowing test of their loyalty to each other, Philippa and Daisy undergo a fantastic journey to rescue a lost fairy who has devoted her powers to maintaining the portal of the stone circle. With time running out, and the worlds of humans and fairies at risk of being severed, Daisy finds herself facing an extraordinary choice that has the power to change her life forever.