"Instruments of Darkness" is a sequel to two Gary Russell novels - "Scales of Injustice" and "Business: Unusual." If you have not read these two close to reading "Instruments of Darkness," then much of what happens will not make sense. Russell tries to make this one independent with bits of backstory cast in through dialogue, but this runs counter to his wish to get you to buy the other two books. The story is rather thin, but, without giving away too much, two aliens seem to be dropping in on Earth at various times of history to recruit humans with ESP powers for something quasi-religious. One alien is an albino humanoid, a suave Bond-villain type, and another is a vaguely humanoid form hiding inside a blast of blue light. These both in some way have something to do with two secret organizations with vague ties to both UNIT and The Forge/C-19, one called The Magnate and another called The Network, although they might both be the same thing. Russell again exercises his penchant for scratching the Who fans' itches by bringing in Evelyn Smythe from Big Finish. Some other problems for me with this novel are that in the first fifty pages, the reader gets inundated with brief encounters of character after character, each given a detailed background that makes them seem terribly important to the story, but each of whom turns out not to be. The Doctor, Mel, and Evelyn are sidelined for about half of the story, with scene after scene devoted to pointless arguing between The Doctor and Evelyn, none of which moves the plot forward. When things finally do come to a head, Mel and Evelyn are again mainly sidelined, with their scenes having little effect on the total story. Mostly, they seem to be there so they can be attacked. There are numerous nods to the James Bond movies, with an elaborate underground complex for a nefarious secret organization, nearly indestructible assassins, and multiple international locations. The plot hinges on the idea of super-powerful mental abilities, the people having these abilities called ESPnets (just to get in an internet reference so it all seems up to date and techy). Mental powers of this kind are indistinguishable from magic, and when they are escalated to so much "power" that one being can destroy worlds and rewrite history with just a thought, then we are completely out of the realm of believability. To give him his due, Russell knows how to pace the story, and his dialogue for the main characters suits them fairly well.