I felt like trying a new series. I randomly picked this one and thought I would hate it. But, I was very wrong! I liked it so much.
There are ten cases in each Encyclopedia Brown book (as far as I know). You can read about the case in each chapter. In the end of the chapter there will be a question. You have to try to figure out the answer to the question. In the end of the chapter it also tells you to turn to a page number to figure out the answer.
This is just an amazing book by author Donald J. Sobol in my opinion!