The Red Chipmunk Mystery — Ellery Queen Jr.

Lost in a strange town, Djuna stumbles on an adventure

On his way home after a summer of fun with his friends, Djuna and his dog, Champ, take advantage of a pit stop in Thompsonville to get off the train and stretch their legs. They have just left the station when Champ slips his leash and runs off into the crowd. Djuna charges after him, but by the time he finds his little dog, the train has left without them. When he reaches for his wallet to buy a new ticket, his pocket is empty. Someone has stolen his money!
 
Stranded, Djuna and Champ will have to think on their feet if they are to find their way home. It's less than one hundred miles to Edenboro, but getting there will mean the adventure of a lifetime.
 
Ellery Queen is one of the world's finest detectives, but his adventures are nothing compared to the Ellery Queen Jr. Mystery Stories. Join Queen's apprentice, Djuna, and his trusty Scottie, Champ, on adventures filled with danger, suspense, and thrills.
 
The Red Chipmunk Mystery is the fourth book in the Ellery Queen Jr. Mystery Stories, but you may enjoy reading the series in any order.