Apparently, there are several of these The Further Adventures of Sherlock Holmes novels published by Titan Books. I’m not a Holmes fan, but Eric is a friend of many, many years and I do like his books. The Martian Menace is an expansion of a novella, The Martian Simulacra, published back in 2018 by NewCon Press. In that novella, a mashup of Doyle and Wells, Sherlock Holmes and Dr Watson are flown to Mars to solve the murder of an important Martian philosopher. But it’s all a ruse, as the Martians are replacing important individuals (only the British ones are named, of course, as this is Edwardian fiction; much like in US genre fiction) and replacing them with robots indistinguishable from the originals. But Holmes and Watson escape this fate with the help of an enterprising young woman from the resistance (comprised of humans wise to the Martians’ plans and the Martian enemies of those Martians who have been welcomed on Earth). The Martian Menace takes this story, and then does something very clever with it. Dragging Moriarty into the story is perhaps a no-brainer. Brown positions Moriarty as the architect of the Martians’ plot, but only by creating a multitude of simulacra of him… and it is the fate of the original Moriarty which proves to be the driver behind the plot of the novel and the enabler of its resolution. Reading this novel was an odd experience. It was as if the novella were two-dimensional, and the novel suddenly added a third dimension. Perhaps read from fresh, without knowledge of the novella, The Martian Menace would read as an inventive take on Sherlock Holmes meets Wells’ Martians. But having, read the novella, the novel went from the familiar to a quite unexpected place. I enjoyed it more than I expected. ( )