by Walter R. Brooks, Kurt Wiese
I enjoyed the charming old style of writing, and the simple story lines. The characters are sweet and funny, and they kept my interest. I liked how Freddy makes mistakes at first. He is not a very good detective to begin with, but he learns quickly and does a better job each time he tries.
Although this is the third book of a series, you don’t have to read the series in order to be able to understand the story.