Finished The Sign of the Four by Sir Arthur Conan Doyle. This is the second novel published in his Sherlock Holmes series. Unlike the first, A Study in Scarlet, it is mostly set in London. This book has all the nuances that are associated with Holmes' character, chemistry, disguises, boxing, violin and cocaine. It also features the Baker Street Irregulars and poison darts. It was faster paced than the first novel, more exciting and extremely readable. I look forward to reading more.