"Thoroughly engrossing, thought-provoking fantasy." -- School Library Journal (starred review)

Some extraordinary rats come to the aid of a mouse family in this "treasure of a book" (The Times, London), the Newbery Medal-winning classic by notable children's author Robert C. O'Brien.

Mrs. Frisby, a widowed mouse with four small children, is faced with a terrible problem. She must move her family to their summer quarters immediately, or face almost certain death. But her youngest son, Timothy, lies ill with pneumonia and must not be moved.

Fortunately, she encounters the rats of NIMH, an extraordinary breed of highly intelligent creatures, who come up with a brilliant solution to her dilemma. And Mrs. Frisby in turn renders them a great service.

• We started tracking this book on June 20, 2021.
• This book was $7.99 when we started tracking it.
• The price of this book has changed 8 times in the past 1,782 days.
• The current price of this book is $4.99 last checked one hour ago.
• This lowest price this book has been offered at in the past year is $2.99.
• The lowest price to date was $2.99 last reached on February 27, 2026.
• This book has been $2.99 one time since we started tracking it.
• The highest price to date was $8.99 last reached on May 5, 2026.
• This book has been $8.99 4 times since we started tracking it.

• Children's eBooksAnimalsMore AnimalsMice, Hamsters, Guinea Pigs & Squirrels
• FranceMice, Hamsters, Guinea Pigs & Squirrels
• Children's eBooksLiterature & FictionClassics
• Children's eBooksAction & AdventureFantasy & Magic
• Children's eBooksAction & AdventureSurvival Stories

• Text-to-Speech: Disabled
• Lending: Disabled
• Print Length: 236 Pages