Megan Frazer Blakemore

Moving into an inherited mansion in Maine with their mother and stroke-afflicted father, three siblings uncover a mystery involving hidden passageways, family rivalries, and healing waters.

Mori and her friends live a normal life on Firefly Lane in Old Harmonie, a utopian community where every kid knows he or she is genetically engineered to be better and smarter, but when a strangely perfect new girl named Ilana moves in, the friends begin to question the only world they have ever known.

Mori and her friends Julia, Benji, and Theo have never seen life beyond the walls of their perfect society, Old Harmonie. That changes when their new friend Ilana is threatened by the rules that are supposed to keep them all safe. They escape together, hoping to find help in Boston with Dr. Agatha Varden, one of Old Harmonie's pioneering founders.

But the outside world is nothing like they anticipated. As they face challenges they never...