قتل در باشگاه دیوژن (معماهای انفرادی شرلوک هولمز، جلد اول)

Readers join Sherlock Holmes and Dr. Watson in trying to solve the murder of Colonel Philip Sylvester in London's most exclusive men's club. With the help of the famous detective and of your cousin Dr. Watson, you must solve two complex cases. One is set in the world of horse racing. The other will bring you to the Diogenes Club: a shady businessman has suddenly died in front of several shocked club members. Who killed him, and how, and why?