A neighbor of Nancy's, Mrs. Dondo, claims that a letter containing money was lost when the mail carrier, Mr. Ritter, passed out front of Nancy's home. Mrs. Dondo's brother, Alonzo Rugby, just happens to live in Charlottesville, so Nancy plans to investigate him during her trip. And Ned, Burt, and Dave briefly show up in Charlottesville during Nancy's stay. This is all so amazingly convenient.
Also convenient is the fact that peacocks show up everywhere, kind like the Centrovians in The Scarlet Slipper Mystery. The missing stained-glass window has a peacock on it. An estate in Charlottesville has peacocks. A man tries to scare the residents of Ivy Hall with a peacock on the lawn. That same man disguises his footprints by strapping brass peacock feet to his shoes. The last one is just plain bizarre.
I find it curious that Mr. Ritter has the same problem as Mr. Dixon did in Nancy's Mysterious Letter. Mr. Dixon stops at Nancy's home and his mail pouch is stolen. Mrs. Skeets claims that a letter containing money was stolen. In The Hidden Window Mystery, the mail is blown around the neighborhood when Mr. Ritter loses consciousness. Mrs. Dondo claims that a letter containing money has gone missing. In both books, the mail carrier has a perfect record and is worried that the missing letter will put a black mark on his record. In both books, the mail carrier will soon retire.
The Hidden Window Mystery is a great story. I found it engaging from start to finish in both texts. I do wish that the story were not so coincidence-driven. I find it hard to believe that Nancy decides to search in Charlottesville for the window, stays with her cousin Susan, and finds the missing window in a house extremely close to Susan's home. The window could have been anywhere in the northeast, but it is conveniently found exactly where Nancy chooses to search. The reader has to suspend disbelief.
Both texts are equally good. The biggest difference between the two texts is that the original text has a few racial stereotypes that are not present in the revised text.