he Red Chipmunk Mystery (1946)

Wonderful adventure story of boy Djuna, who uses his eyes and his head and his little Scottie dog (terrier), Champ who uses his nose. There is also Mr. Scissors, the traveling knife grinder, driving though the country in a wonderful caravan (see cover) with his young granddaughter, Joan and also two wicked men who are cruel to Mr. Scissors plus a reporter named Socker Furlong and Miss Annie Ellery who plays a surprising part at the end.

"...Mr. Furlong, a newspaper reporter, was a friend of both the boys'. They admired him, because he was a really good reporter, but he liked to pretend that he was lazy. Waterbury looked alarmed at seeing so many people around and hastily pulled his head back inside his shell. ..."

A new Ellery Queen, Jr. book is an event which is joyously hailed by all boys and girls who love a good mystery story.
Once more Djuna, the boy with a flair for detection and hero of previous Ellery Queen, Jr. books, is at grips with a mystery -- this time it's a "stolen jewels" mystery, in which, but for his dog, Champ, he might never have been involved.
When Champ runs away at an intermediate station on their way home from holiday so that they miss the train, then adventure begins. No sooner has Djuna resolved to hitch-hike the rest of the way than one curious event follows another with such rapidity that he needs all his wits to solve a mystery which has baffled even the police.