If you enjoy Sherlock Holmes then do I have a series for you. This is book 10 in the Barker & Llewelyn set. Heavily influenced by Doyle's work, this nevertheless stands well on its own. This is the 1st book though where Llewelyn gets the chance to shine fully as an enquiry agent when his boss, Barker, is badly injured when their offices are blown up. Unlike me, if you start this series now you won't have to wait 6 years between books 5 and 6.