Philomel / Penguin Books for Young Readers

The magical adventure of a boy named Marty who is devastated when he loses his most precious possession: a memory-packed jacket given to him by his father, who is terribly ill. Then Marty hears about the Train of Lost Things, where all the lost treasures of children are gathered. And so he sets off in hopes of finding the Train, his jacket—and, maybe, a cure for his father as well.
Click here for reviews and more.

Co-authored with Laurie Thompson

Walden Press / Harper Collins, 2018

Click here for reviews and more.

Co-authored with Laurie Thompson

Walden Press / Harper Collins, 2017

Tiny scorpions that burrow in books? A chicken that lived for years after having its head chopped off? A medical procedure that can give you X-ray vision? These stories and more are illustrated in full color within these pages. But beware . . . not all of the articles are true! Each action-packed chapter features three stories; two of them are true, but one is a lie. Can you decipher which is which? This innovative book will not only introduce readers to many amazing unknown facts about the natural world, but will also challenge them to read critically, and dig deep to find the truth in their reading.

A Junior Library Guild selection!
Chicago Public Library's Best Books of 2017
2018 Texas Topaz list selection
2017 Booklist Editor's Choice list
2017 Booklist's Lasting Connections List
2017 Nerdie Long-form Nonfiction Award
2017 Cybils Award finalist

Click here for reviews and more.

Philomel, 2017

The thrilling series conclusion! Princess Juniper and her friends have forged an alliance with the Anju people, and are now ready to head back to Torr recapture the castle and free the imprisoned king. Inside the castle, danger lurks around every corner. Packed with secret passages, daring disguises, betrayals and schemes and rediscovered friendships, this action-packed finale will captivate and enthrall till the very last page.


Click here for reviews and more.

Philomel, 2016

Princess Juniper and her friends are back for more brand-new adventures: Now that her summer land is safe, it's time to figure out how to save her father's kingdom. But before they can all return to Torr, Juniper must find her subjects' stolen horses. New clues lead them to a mysterious tree-dwelling people, who have links to Juniper’s own past—and more than a few dangerous secrets of their own...
Click here for reviews and more.

Philomel, 2015

All Princess Juniper wants for her thirteenth birthday is a very small country all her own. When her father agrees, Juniper is overjoyed, and sets off for her new kingdom along with her group of kid subjects. But being a queen turns out to be not quite so easy as Juniper expected. And meanwhile, outside their mountain hideway, a bigger trouble is brewing…


Click here for reviews and more.

Walker/Bloomsbury, July 2013

The ghostly adventures of twelve-year-old Dahlia, along with her new living friends Oliver and Poppy, as they dodge a creepy Ghosterminator, a town official with devious plans, and set about solving the mystery of Dahlia’s death—before it’s too late.


Click here for reviews and more.

Random House Books for Young Readers, June 2013

She wakes up in a rocket on an alien planet with no idea who she is, or where, or why. The letter in her pocket gives her one simple message: “Experience. Discover. Survive.” The timer on her wrist is counting down to zero. And the earth-shaking rumble in the distance sends the clear message: Something is coming. If you like your science fiction fast-paced and your main character conflicted, get ready for a plot-twisting, mind-bending read like no other!


Click here for reviews and more.

Walker/Bloomsbury, 2011

Thirteen-year-old Luchi is anything but an ordinary American teenager. Born in a remote country prison in Northern Thailand, her mother's death pushes Luchi into the outside world--and into the web of secrets that was her mother's past. A coming-of-age story that follows a compelling character on her journey across continents, and oceans, and into a future she cannot begin to imagine.


Click here for reviews and more.