The Voodoo Master by Maxwell Grant is an awkward story. I never got the impression that the villain was as great a threat as the narrative wanted me to, which is most of the pull for this pulp. It even is meant to continue ask a hook at the end into the future of the series, but Mocquino is a weak entry into The Shadow's Rogue Gallery. His powers are too tropey, his motivations less than that of even lackluster Bond villains, and Grant's writing leans way too much into racialized stereotypes. How many times will I read of villainous darkened faces from the West Indes?
So, why 4 stars? Well, the writing is still good and interesting, the intrigue builds, and you see far more of the Shadow and his operations here. The Shadow himself is also vulnerable at times, though there is a bit too much contrivance. It seemed like the villain lucked into his standing far more than deserving it for himself, which is something I would have bought with the Romanoff book - which was just genuinely great in comparison to this one.
As a result, I'm left wishing that all the good elements of this book were part of a different one. Otherwise, this book is half a 2 star, and half a 5 star.