Donald J. Sobol was the author of the highly acclaimed Encyclopedia Brown series and many other books. His awards include a special Edgar Award from the Mystery Writers of America for his contribution to mystery writing in the United States, and the Pacific Northwest Library Association Young Readers' Choice Award for Encyclopedia Brown Keeps the Peace.

The famous boy detective solves ten, all new short mysteries. Readers can solve the mysteries along with him and find the answers in the back of the book.