It's still a mystery, loosely speaking, but there is nothing much Sherlockian about it. The events are triggered by the baddies' attempt to get their hands on this month's packet of letters to Holmes because one of them would give away their nefarious plot to — oh, never mind; if you're a pastiche author you've thought of it already, and if you're not, you might possibly want to be surprised. Holmes himself does not appear, and nobody in the story even believes in his existence, if you can imagine.
Robertson is a highly competent comic writer and deserves readers who aren't hoping for more than that. This series has, however, pretty much moved beyond being material for a Sherlockian collector.
Copyright © Chris Redmond 2014