Worlds collide in a spectacular way when Newbery and National Book Award finalist Kathi Appelt and Pulitzer Prize nominee and #1 New York Times bestseller Alison McGhee team up to create a fantastical, heartbreaking, and gorgeous tale about two sisters, a fox cub, and what happens when one of the sisters disappears forever. Sylvie and Jules, Jules and Sylvie. Better than just sisters, more than best friends, they’d be identical twins if only they’d been born in the same year. And if only Sylvie wasn’t such a fast—faster than fast—runner. But Sylvie is too fast, and when she runs to the river they’re not supposed to go anywhere near to throw a wish rock just before the school bus comes on a snowy morning, she runs so fast that no one sees what happens…and no one ever sees her again. Jules is devastated, but she refuses to believe what all the others believe, that—like their mother—her sister is gone forever. At the very same time, in the shadow world, a shadow fox is born—half of the spirit world, half of the animal world. She too is fast—faster than fast—and she senses danger. She’s too young to know exactly what she senses, but she knows something is very wrong. And when Jules believes one last wish rock for Sylvie needs to be thrown into the river, the human and shadow worlds collide. Writing in alternate voices—one Jules’s, the other the fox’s—Kathi Appelt and Alison McGhee tell the searingly beautiful tale of one small family’s moment of heartbreak, a moment that unfolds into one that is epic, mythic, shimmering, and most of all, hopeful. Kathi Appelt is the author of the Newbery Honoree, National Book Award finalist, and bestselling The Underneath as well as the National Book Award finalist The True Blue Scouts of Sugar Man Swamp , Maybe a Fox (with Alison McGhee), Keeper , and many picture books including Counting Crows and Max Attacks . She has two grown children and lives in College Station, Texas, with her husband. Visit her at KathiAppelt.com. Alison McGhee is the New York Times bestselling author of Someday , as well as Dear Sister , What I Leave Behind , Pablo and Birdy , Where We Are , Maybe a Fox with Kathi Appelt, Firefly Hollow , Little Boy , So Many Days , Star Bright , A Very Brave Witch , Dear Brother , and the Bink and Gollie books. Her other children’s books include All Rivers Flow to the Sea , Countdown to Kindergarten , and Snap! . She lives in Minneapolis, Minnesota, and Laguna Beach, California. You can visit her at AlisonMcGhee.com. Maybe a Fox 1 From under her covers, Jules Sherman listened for her sister, Sylvie, to walk out of their room. As soon as she did, Jules slipped out of bed and slammed the door behind her. She was still angry. Who did Sylvie think she was? The day before, Sylvie had once again left her at the bottom of the front porch steps and run into the woods, disappeared, her wavy red-brown hair swishing down her back, ignoring Jules’s pleas to wait up, for once just wait up. Sylvie was always doing that. Taking off. So fast. Time after time, leaving Jules standing there. Alone. Jules’s cheeks flushed with a bright blaze of anger. Here she was standing alone again, this time in the echo of the slammed bedroom door. The morning was still early. A gray dimness came in through their window, aided only by a thin beam from the hallway that slipped in under the door. Even in the shallow light Jules could still see Sylvie’s favorite T-shirt, along with the sweater and jeans Sylvie planned to wear that day, all laid out on her sister’s bed. Jules hesitated, then grabbed the shirt, went straight to the windowsill and in one swift motion, swept all her rocks into the T-shirt, using it as a kind of basket. Ha! Sylvie would hate that. Her precious, precious T-shirt. The shirt was thin and soft and smelled like cotton and coconut shampoo and Sylvie. Jules took a deep breath. Sylvie loved coconut shampoo. In fact, she loved anything that smelled like coconut—coconut ice cream, coconut candy, coconut candles, including the one Sam had given her for Christmas. Sylvie said coconut was her “signature scent.” Jules wondered what her own signature scent was. One thing for sure, it wasn’t coconut. She dumped the rocks onto her bed and then did the same thing with the rocks from her bookcase, the rocks on top of her dresser, and the rocks from the wooden box her dad had made her for Christmas. The rocks spilled across the mountains and valleys of her sheets and blanket. She tossed her pillow aside and scooped the rocks into the empty space left open by the missing pillow. Jules pulled the tiny hand lens that she wore on a lanyard around her neck out from under her pajama top. Her dad had only recently given it to her. The lens was about the size of a quarter, and a bright LED light shone out from it. “Every rock hound should have one,” Dad had told her. The lens magnified everything by ten times. When Jules held it against the surfa