R-T, Margaret, and the Rats of NIMH is a sequel to Mrs. Frisby and the Rats of NIMH

Mrs. Frisby and the Rats of NIMH

Mrs. Frisby and the Rats of NIMH is a 1971 children's book by Robert C. O'Brien. Illustrated by Zena Bernstein, it won the 1972 Newbery Medal. A film adaptation, The Secret of NIMH, was released in 1982....

and it continues the story after the end of Racso and the Rats of NIMH

Racso and the Rats of NIMH

Racso and the Rats of NIMH is the 1986 sequel to the popular book, Mrs. Frisby and the Rats of NIMH, written by Jane Leslie Conly. It continues where the previous book left off....

. It was written by Jane Leslie Conly

Jane Leslie Conly

Jane Leslie Conly is an American author, the daughter of author Robert C. O'Brien. She started her literary work by finishing the manuscript for her father's Z for Zachariah in 1975 after his death. Her first own book, Racso and the Rats of NIMH, was published in 1986, and is a sequel to her...

, the daughter of the author for the original book.

Plot summary

When two children named Margaret and Artie are lost during a camping trip, they are found by the colony of rats, specifically one named Christopher. The children help the rat community with various tasks, and Artie and Christopher become very close friends. However, when winter comes, the rats cannot shelter the children and must send them back. The children try to keep the secret of Thorn Valley, but after pressure, Margaret ends up revealing it. The story ends with a party of adults traveling to Thorn Valley to discover the rats' colony only to discover an empty, apparently uninhabited plot of land with all traces of the colony removed. The whereabouts and fate of the rats of NIMH are left unstated, though Artie did find a gift from Christopher, a picture of an arrow, presumably pointing to the new location of the colony.