They are not like other rats. They work at night, in secret . . .
Time is running out for Mrs Frisby. She must move her family of mice before the farmer destroys their home. But her youngest son, Timothy, is too ill to survive the move.
Help comes in the unexpected form of a group of mysterious, super-intelligent rats. But the rats are in danger too, and little by little Mrs Frisby discovers their extraordinary past . . .
Robert C. O'Brien (1918-1973) was, in private life, Robert Leslie Conly, senior assistant editor of National Geographic Magazine where he worked for over twenty years. He was born in New York and lived most of his adult life in Virginia. He wrote three books for children, including the acclaimed MRS FRISBY AND THE RATS OF NIMH which won the prestigious Newbery Medal. His haunting young adult novel Z FOR ZACHARIAH was completed posthumously by his wife, Sally, and daughter, Jane, using the author's notes.