"1907. On the eve of her fifth birthday, Poppy Pendleton is tucked safely in her bed, listening to her parents entertain New York's gilded society in their Thousand Islands castle; the next morning, she is gone, and her father is found dead in his smoking room. 1992. Though Chloe Ridell lives in the shadows of Poppy's castle, now in ruins, she has little interest in the mystery that still captivates tourists and locals alike. She is focused on preserving...

With help from their cousin Harry, eight-year-old twins Ella and Ethan discover who is illegally taking coral from the reefs near their aunt and uncle's beach house on the shore of Australia's Coral Sea.

Trapped on the island of Nil in a parallel universe, Rives, the undisputed leader of Nil City, teams up with mysterious new arrival Skye in a desperate race to save all the residents of Nil--and possibly destroy the island forever.

Aidan and Sarah Cooper begin to decipher a mysterious coded document that they discovered in a secret compartment of an antique English desk their father recently bought at an auction, and as they become more involved in the piece, which seems to be referring to the story about the origin of Peter Pan, a powerful being begins to pursue them.

Told in different voices, on Centerlight Island, halfway between the United States and Canada, middle-schoolers Keenan and ZeeBee team up to seek gold rumored to be hidden there a famous gangster.

Ms. Frizzle's class swims in a fish tank and a coral reef.

While spending the summer at Grandmary's home on Goose Lake, Samantha and the twins Agnes and Agatha decide to visit the island where Samantha's parents were drowned during a storm.

Recounts what happens when the citizens of an island must rely on all their ingenuity to communicate in an increasingly limited language when the goverment progressively bans letters from the alphabet.

After fleeing Vienna, Hedy Bercu, a Jewish woman living on the island of Jersey, is forced to hide in plain sight during the German occupation and to survive must depend on her own courage, her community, and a German soldier she befriends.

While investigating the strange behavior of the once-peaceful mermaids, the Lost Boys battle their old nemesis, Captain Hook, whose evil plan threatens to destroy the Mollusk village and change life on Neverland Island forever.