Our world is surrounded by Worlds of Myth, unseen magical realms populated by beings we know from ancient mythology, called Mythics. Every once in a while, a Mythic travels from its world to ours. When that happens, mysterious events often follow. Welcome to the world of The Unbelievable FIB...




(also published as The Entirely True Story of the Unbelievable FIB)

Strange things are happening in Middleton. Dark clouds have gathered over the sleepy New England community and something big is lurking in the woods around the town. Fortunately, eleven-year-old Prudence Potts is on the case—and she’s dragging the new boy in her class, ABE, along for the ride. But when Pru’s keen detective skills and ABE’s talent for solving riddles lead them to the mysterious Mister Fox, the two unlikely heroes discover some shocking truths. They learn that magic is real, talking squirrels are rude, and that giants from Norse mythology are about to trample Middleton in their search for a lost Viking artifact!


It’s up to Pru and her new friends to stop the giants and save Middleton—and maybe the world. To do that, though, Pru will first have to answer one all-important question: “WHAT IS THE UNBELIEVABLE FIB?”

Paberback edition now available! Click here to purchase hardcover edition.  

Algonquin Young Readers

ISBN-13: 978-1616206376

ISBN-10: 1616206373



The Norse gods have returned to Middleton—and they've brought bad news. Loki's misdeeds have grown from mischief to murder. He has killed Baldur, favorite of the gods. By doing so, he has set in motion events that will lead to Ragnarok, a war between the gods and giants that will destroy their world and ours. Now Odin wants ABE and Pru to help find Loki and imprison him before the giants can rally to his side. But the gods aren't the only ones back in town. An old friend has also returned and he's brought new questions about Baldur's death.


To answer those questions, ABE and Pru will travel to Niflheim, the Norse underworld and confront the Queen of the Dead herself. Unfortunately, they quickly find that getting into the world of the dead is easy. It’s getting out again—alive—that proves difficult. And, in the end, can anyone really escape Death?


Available now!

Algonquin Young Readers

ISBN-13: 978-1616204990

ISBN-10: 1616204990



(also forthcoming as The Trickster's Tale)

Still available! When The Unbelievable FIB 2: Over the Underworld was announced, The Entirely True Story of the Unbelievable FIB was renamed The Unbelievable FIB 1: The Trickster's Tale for its paperback release to show that it is the first book in a series. At that time, new series artist Matt Rockefeller was brought in to provide the amazing new cover art seen above. For a limited time, though, the original hardcover edition with its beautiful cover art by illustrator Gilbert Ford is still available.   

Algonquin Young Readers

ISBN-13: 978-1616204983

ISBN-10: 1616204982


"Debut author Shaughnessy skillfully weaves Norse myth, the story of Baba Yaga, and Pru’s pain over her father’s death into an action-packed story full of heart. Pru is relatable and real as she learns to trust people again, not to mention brave as she confronts ancient villains. It’s a moving exploration of the ways people can close themselves off to magic in the world, as well as face grief scarier than any frost giant."

-Publishers Weekly

“This debut title in a planned middle-grade series introduces readers to a feisty young sleuth, fantastical realms, and warring Viking gods . . . this story offers pleasing elements, including an authentic boy-girl friendship, fresh musings on the place of magic in childhood, and original, vividly depicted scenes (check out Mr. Fox's henhouse, a tiny shack with nearly infinite possibilities inside). Shaughnessy's imaginings show promise, and his puzzles and plot twists will absorb and intrigue younger readers, as they consider the book's central questions about truth, magic, and adventure.”

- Kirkus Reviews

“In a vein similar to ‘Percy Jackson,’ the ‘Imaginary Veterinary’ books, and even Men In Black, this strong debut is shaping up to be an intriguing series. Shaughnessy seamlessly blends Norse and Russian mythologies with the genres of mystery, fantasy, and adventure all the while hitting upon some deeper personal issues such as loss and self-awareness. The conflict is satisfyingly resolved by story’s end, giving it the feel of a stand-alone novel. With the current popularity of Norse characters in pop culture this is not only sure to be an easy sell, but also a book with substance—one to satisfy the cravings of more sophisticated readers looking to sink their teeth into a good folkloric story. A creative, fun mystery that combines a variety of genres and deeper themes.”

-School Library Journal