Murder is not for young ladies, tea time with a fatality, first-class murder, fireworks with deadly consequences, murder under the mistletoe - Daisy Wells and Hazel Wong are famous for the cases they have solved! For all those who can't get enough of thrilling detective stories, there is now the ultimate fan book! In this book, Daisy and Hazel reveal their best-kept secrets and explain how a good detective solves cases, how to start your own detective agency, or how to crack a code. They tell stories of notorious historical spies like Mata Hari, real unsolved murder cases such as the crimes of Jack the Ripper, and the great detectives of literary history like Hercule Poirot, Miss Marple, and of course, Sherlock Holmes. Additionally, Hazel and Daisy open their casebook with more mysterious puzzles from Deepdean School, especially their first case: Lavinia's.