Eleven-year-old twins Jason and Julia, along with their friend Rick, match wits with Peter Dedalus, the elusive inventor who created Kilmore Cove's Mirror House, as they try to uncover the secret hidden somewhere inside before Oblivia Newton can find it.

"The magic tree house has whisked Jack and Annie to the Himalayas in Nepal. They're searching for the mysterious Gray Ghost...Jack does not want to find a ghost. But he and Annie are excited about all the amazing animals they see. So excited, in fact, that Annie and Jack get lost in the mountains! Can they make their way to safety before the Gray Ghost finds them?"--

"In a far distant future, Tucker Feye and the inscrutable Lia find themselves atop a crumbling pyramid in an abandoned city. In present-day Hopewell, Tucker's uncle Kosh faces armed resistance and painful memories as he attempts to help a terrorized woman named Emma, who is being held captive by a violent man. And on a train platform in 1997, a seventeen-year-old Kosh is given an instruction that will change his life, and the lives of others, forever....

Alfie and Emilia are transported by their great-aunt's latest magical secret ingredient to Hong Kong, where they assist Ying's family with the opening of a new restaurant.

"Despite all of the odds, Joan achieved the impossible. She reset the timeline, saved her family--and destroyed the hero, Nick. But her success has come at a terrible cost. She alone remembers what happened. Now, Aaron, her hard-won friend--and maybe more--is an enemy, trying to kill her. And Nick, the boy she loved, is a stranger who doesn't even know her name. Only Joan remembers that a greater and more dangerous enemy is still out there. When a...

Siblings Alfie and Emilia are magically transported to Paris, where a case of mistaken identity finds them caught up in the behind-the-scenes drama at a traditional French cooking school.

"Jack and Annie are about to meet the fiercest warriors of all--the soldiers of the ancient Roman legion! When the magic tree house whisks them back to a ROman army camp, they learn their mission: Be like warriors. That is easier said than done--Roman soldiers are the best fighters in the world! When Jack and Annie find themselves in the wrong place at the wrong time, they're in big trouble. Who will save Jack and Annie?"--Page [2] of cover.

The reader enters a mysterious cave and by following the instructions on each page can have several different adventures backward and forward in time.

When fifteen-year-old Frannie's father dies, only a mysterious jigsaw puzzle that he leaves behind can help her come to terms with his death.

"When their great-aunt comes to live with Alfie and his older sister Emilia, they learn that food can not only take you places but also bring you back home. In the first book in the series, Alfie and Emilia find themselves magically transported to Naples"--