Robert C. O'Brien wrote children's fantasy and science fiction, best known for Mrs. Frisby and the Rats of NIMH. The novel follows a widowed field mouse trying to move her home before a farmer's plough arrives while one of her children is too ill to travel. Her search for help leads to a colony of unusually intelligent rats whose abilities come from laboratory experiments. Z for Zachariah, published after O'Brien's death, takes a much darker route through a teenage girl who believes she may be the only survivor of nuclear war until another person arrives. His books are clear, tense and idea-led, fitting animal fantasy, middle-grade science fiction and post-apocalyptic YA. Read more Less
