Note: The book credits two authors: Ellen MacGregor, the author of the first 4 "Miss Pickerell" books who had died in 1954, and Dora Pantell. According to SFE3, "Dora Pantell [...] at least initially used MacGregor's story notes, and signed herself in collaboration with the elder writer until 1983." This was the 15th and last Miss Pickerell story published by McGraw-Hill, and the last published as by both Ellen MacGregor and Dora Pantell.

Synopsis: "While traveling on the Space Shuttle, Miss Pickerell discovers that it is hauling a spy satellite programmed to spread nuclear reactor fragments." --summary, Library records of the 1st ed.