Some extraordinary rats come to the aid of a mouse family in this Newbery Medal Award-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...

Ellen awakens one morning with a mysterious silver crown on the pillow beside her. What magic powers it possesses she has not yet discovered, but the sudden changes in her life are unmistakable: her house is burned down, her family has disappeared, and a man in a dark uniform is stalking her. Can Ellen ever find her family? Can she use the power of the silver crown to thwart the powers of darkness? What diabolical force hides inside the mysterious castle in the woods?

Is anyone out there?

Ann Burden is sixteen years old and completely alone. The world as she once knew it is gone, ravaged by a nuclear war that has taken everyone from her. For the past year, she has lived in a remote valley with no evidence of any other survivors.

But the smoke from a distant campfire shatters Ann's solitude. Someone else is still alive and making his way toward the valley. Who is this man? What does he want? Can he be trusted? Both excited and terrified, Ann soon realizes there may be worse things than being the last person on Earth.

When mouse widow Mrs. Frisby needs advice on how to move her children safely, she consults the rats who live under the rosebush. Not only do they help her, they tell her of their escape from a laboratory where experimentation had made them literate, and of the brave death of her husband. Newbery Medal; ALA Notable Children's Book; "Horn Book" Fanfare Book.