he Brown Fox Mystery (1948)

When those two enthusiastic fishermen, Djuna and his friend Tommy, are offered a chance to spend the summer at fish-filled Silver Lake, as the guests of Miss Annie Ellery, they are overjoyed. But great as the fishing proves to be, there is more in store: Silver Lake holds a mystery and the boys find themselves swept up in a series of exciting and dangerous adventures, involving an abandoned ice-house and two fires, as they help to solve it.

Samuel McCoy (1882-1964) wrote 'The Brown Fox Mystery' as well as 5 other Djuna stories. 

The Brown Fox Mystery  Translations: 
German: Milo und der Fuchs 
Italian: Il Mistero Della Volpe Fulva 
Japanese: chairoi kitsune no himitsu  
Swedish: Duffy på farlig mark