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About The Book

The Warriors series meets Redwall in this first book in an epic animal adventure series set in the subway tunnels of Brooklyn and for “fans of Erin Hunter, Brian Jaques, and Kathryn Lasky” (School Library Journal).

Hopper is just an ordinary pet shop mouse before he escapes. Soon he finds himself below the bustling streets of Brooklyn, deep within the untamed tangles of transit tunnels, and in Atlantia, a glorious utopian rat civilization.

But all is not what it seems. Though Hopper is treated as a royal guest, he misses his siblings that he lost in the escape attempt. That, and Atlantia is constantly threatened by the rebels who wish to bring the city to its knees. And there are cats everywhere in Atlantia, cats that leave the citizens unharmed… and no one can seem to answer why.

Soon, Hopper is caught in the crosshairs of a colossal battle, one that crosses generations and species. As the clashes rage, Hopper learns terrible, extraordinary secrets: Deadly secrets about Atlantia. Painful secrets about his friends.

And one powerful secret about his destiny…

Learn more at Mouseheart.com!

About The Author

Lisa Fiedler is the author of many novels for children and young adults. She divides her time between Connecticut and the Rhode Island seashore, where she lives happily with her very patient husband, her brilliant and beloved daughter, and their two incredibly spoiled golden retrievers.

About The Illustrator

Vivienne To has illustrated several books, including The Underland Chronicles by Suzanne Collins and the Randi Rhodes, Ninja Detective series by Octavia Spencer. As a child, she had two pet mice escape. She currently lives in Sydney, Australia, with her partner and her ginger cat. Visit her at VivienneTo.com.

Product Details

  • Publisher: Margaret K. McElderry Books (May 20, 2014)
  • Length: 320 pages
  • ISBN13: 9781442487840
  • Grades: 3 - 7
  • Ages: 8 - 12
  • Lexile ® 800L The Lexile reading levels have been certified by the Lexile developer, MetaMetrics®

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Raves and Reviews

“Sword-wielding rats, feline palace guards, and rebel mice fill this adventure with imagination and heart…. For those who love an underdog and some romping good battles, Fiedler thoroughly entertains.”

– Publishers Weekly

"Captivating and cunning, Mouseheart is the next great adventure. Mouseheart is the first in the series which promises to deliver grand adventure and great storytelling. Hopper is one little mouse who roars! Readers who loved Jacques' Redwall series and Hunter's Warrior series will love this new series."

– ABookAndAHug.com

“Riddled with surprises, the fast-paced, complex plot features a host of vivid, memorable rodent and feline characters. Black-and-white illustrations capture key events. Another stalwart mouse with a brave heart will win fans in this captivating underground adventure.”

– Kirkus Reviews

“[A] captivating animal fantasy set in the subway tunnels of modern-day Brooklyn, NY. Mouseheart will please fans of novels by Erin Hunter, Brian Jacques, and Kathryn Lasky."

– School Library Journal

"The underground world and mix of intrigue, prophecy, and betrayal bring to mind Suzanne Collins’ Gregor the Overlander series....Fans of Brian Jacques’ Redwall Abbey series may enjoy this modern adaptation of rodent politics and warfare."

– Booklist

"A tiny, new hero has arrived! [A] Braveheart-style epic adventure...The story also emphasizes love and loyalty, and provides clear examples of mercy and restraint."

– Christian Library Journal

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More books from this author: Lisa Fiedler

More books from this illustrator: Vivienne To

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