The Sign of Four

Officially the best novel with the most interesting story I've read so far. The language is indeed a little bit hard for me to understand like the other classics, but I can still enjoy it thanks to the builtin dictionary in the Play Books app.

This is the second installment of Sherlock Holmes franchise. Mary Watson, who later will be Watson's wife, is introduced in this book in an excellent way.

I don't want to spoil the story, just read it for yourself. It won't disappoint you.