In deference to Sherlock Holmes&rsquo;s wishes, Dr Watson kept the tale of The Giant Rat of Sumatra a secret. However before he died he arranged that the bizarre story of the giant rat should be held in the vaults of a London bank until all the protagonists were dead....<br> Sir Arthur Conan Doyle&rsquo;s timeless creation returns in a new series of handsomely designed detective stories. The <i>Further Adventures</i> series encapsulates the most varied and thrilling cases of the worlds&rsquo; greatest detective.