Ephraim Appledore-Smith is an ordinary boy, and up until his father's stroke he lived an ordinary life. But all that changes when his family moves to the Water Castle - their ancestral home in the small town of Crystal Springs. Mallory Green's family has always been the caretakers of the Water Castle - and the guardians of its secrets. She has been raised to protect the legendary Fountain of Youth, hidden on the estate grounds. But ever since her mom left, she's stopped believing in magic. Will Wylie's family has been at war with the Applegates for generations, all because of the Water Castle's powerful secrets.
Mori and her friends live a normal life on Firefly Lane in their utopian community, Old Harmonie. In a world this safe and perfect, they've never had to question anything...never had to wonder about how their lives came to be. Until a new girl named Ilana moves in. She's so perfect that Mori and her friends are curious.... Where exactly did Ilana come from, and why does she act so strange sometimes? When Ilana's secret is revealed, the kids on Firefly Lane must decide: Is it finally time to start questioning the only world they've ever known?
Hazel Kaplansky and new student Samuel Butler investigate rumors that a Russian spy has infiltrated their small Vermont town, amidst the fervor of Cold War era McCarthyism, but more is revealed than they could ever have imagined.
Sixth-grader Ruth Mudd-Flaherty hasn't yet found her place at Humberboldt Middle School, at least that's how her moms see it. She prefers to be a lone wolf now that her very best friend, Charlotte Diamond, has moved on to a new, more socially acceptable group of friends. Ruth has been spending most of her time at the public library studying words for their school's upcoming spelling bee. She just knows that winning the bee will make people see her differently.