Bob Howard is a minor cog in a dangerous machine - the Laundry, a secret British department dedicated to protecting the nation from Lovecraftian horrors. In this universe, Lovecraft unwittingly stumbled on more of the truth than he knew. he was followed by Turing, who discovered that abominations from other dimensions can be summoned by mathematical theorems and invoked by computer code.
Would be tech support worker Howard has much more to worry about than the office cabling or backups.
This is the third in Stross's much praised Laundry series after
The Atrocity Archives and
The Jennifer Morgue. They are good, but in my view this is the best yet, pitting Howard against foreign spies, cultists and his own missing boss as he races to retrieve the missing memorandum itself. TFM picks up themes from the earlier books, being stuffed with technology in-jokes, nods to The Register (so, Bob's shiny new iPhone is constantly described as his "jesusphone"), and scenes of office life as well as darker humour. We also learn more about the Laundry itself - its history, personnel (look out for the "residual human resources") and why it is so obsessed with paperclip security - as well as the true purpose of London's Post Office Underground Railway.
The previous two books were styled and structured as tributes to/ affectionate pastiches of, respectively, Len Deighton and Ian Fleming, as Stross subverted the conventions of the Cold War thriller to address his cosmic occult threat. That added to the humour - watching Bob flailing in his part as James Bond, and ticking off the tropes in Jennifer Morgue, was great fun - but it also, possibly, sidelined the true and developing nature of the threat facing the Laundry and its world. The current book is avowedly based on the novels of Anthony Price, - see for example
Other Paths to Glory (Coronet Books). When Stross made this known on his website I went off and ordered a number of them (they're mostly out of print now, which is a pity. I've been hunting second hand bookshops since to complete my collection.) However I didn't find Fuller Memorandum as close to Price as the earlier two books were to their models. Yes, some of the classic Price tropes are there - the urgent but mysterious threat whose secret can only be found in history, the trusted figure who has become unreliable. However, the one that strikes me most in Price's books - the bizarre skein of double, triple and quadruple motivations, the total perplexity about what is really going on - doesn't figure anything like so strongly as I'd expected or even as much as in many of Stross's other books. (It goes without saying that Stross has better characterisation and dialogue). I think that Fuller Memorandum is the better for this. Without ever being obvious - there is a lot happening here and you have to follow it carefully - it feels a bit less... crowded... than some of his other work, including the the other two Laundry novels, and the book is the better for it. The plot has room to breathe. The characters really take shape. I think that as the series is growing up Stross is freeing it from the earlier models and forging his own tone for it, a distinctively Laundryverse tone which I'm looking forward to more of. While waiting, there's The Laundry role-playing game, which looks fun.
So, go out, get this, read it, you'll love it (or else your soul has already been eaten by you-know-what).